Merging upstream version 126.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

151 files changed, 10328 insertions, 0 deletions

diff --git a/mobile/android/android-components/components/feature/readerview/.gitignore b/mobile/android/android-components/components/feature/readerview/.gitignore
new file mode 100644
index 0000000000..2ddf5f27b1
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/.gitignore
@@ -0,0 +1 @@
+manifest.json
diff --git a/mobile/android/android-components/components/feature/readerview/README.md b/mobile/android/android-components/components/feature/readerview/README.md
new file mode 100644
index 0000000000..c3a4439fdd
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/README.md
@@ -0,0 +1,49 @@
+# [Android Components](../../../README.md) > Feature > Reader View
+
+ A component wrapping/providing a Reader View WebExtension.
+
+## Usage
+
+### Setting up the dependency
+
+Use Gradle to download the library from [maven.mozilla.org](https://maven.mozilla.org/) ([Setup repository](../../../README.md#maven-repository)):
+
+```Groovy
+implementation "org.mozilla.components:feature-readerview:{latest-version}"
+```
+
+### Integration
+
+Initializing the feature:
+
+```kotlin
+val readerViewFeature = ReaderViewFeature(
+    context,
+    engine,
+    sessionManager,
+    onReaderViewAvailableChange = {
+    	// e.g. readerViewToolbarActionVisible = it
+    }
+)
+
+```
+
+Showing and hiding Reader View:
+
+```kotlin
+readerViewFeature.showReaderView()
+readerViewFeature.hideReaderView()
+```
+
+Showing and hiding the Reader View appearance UI (to adjust font size, font type and color scheme). Note that changes to the appearance settings are automatically persisted as user preferences.
+
+```kotlin
+readerViewFeature.showAppearanceControls()
+readerViewFeature.hideAppearanceControls()
+```
+
+## License
+
+    This Source Code Form is subject to the terms of the Mozilla Public
+    License, v. 2.0. If a copy of the MPL was not distributed with this
+    file, You can obtain one at http://mozilla.org/MPL/2.0/
diff --git a/mobile/android/android-components/components/feature/readerview/build.gradle b/mobile/android/android-components/components/feature/readerview/build.gradle
new file mode 100644
index 0000000000..896753f6d9
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/build.gradle
@@ -0,0 +1,61 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+
+android {
+    defaultConfig {
+        minSdkVersion config.minSdkVersion
+        compileSdk config.compileSdkVersion
+        targetSdkVersion config.targetSdkVersion
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    namespace 'mozilla.components.feature.readerview'
+}
+
+tasks.register("updateBuiltInExtensionVersion", Copy) { task ->
+    updateExtensionVersion(task, 'src/main/assets/extensions/readerview')
+}
+
+tasks.withType(KotlinCompile).configureEach {
+    kotlinOptions.freeCompilerArgs += "-opt-in=kotlinx.coroutines.ExperimentalCoroutinesApi"
+}
+
+dependencies {
+    implementation project(':browser-menu')
+    implementation project(':browser-state')
+    implementation project(':concept-engine')
+    implementation project(':support-base')
+    implementation project(':support-ktx')
+    implementation project(':support-utils')
+    implementation project(':support-webextensions')
+    implementation project(':ui-icons')
+
+    implementation ComponentsDependencies.androidx_core_ktx
+    implementation ComponentsDependencies.kotlin_coroutines
+
+    implementation ComponentsDependencies.androidx_constraintlayout
+
+    testImplementation project(':support-test')
+    testImplementation ComponentsDependencies.androidx_test_core
+    testImplementation ComponentsDependencies.androidx_test_junit
+    testImplementation ComponentsDependencies.testing_robolectric
+    testImplementation ComponentsDependencies.testing_coroutines
+}
+
+apply from: '../../../android-lint.gradle'
+apply from: '../../../publish.gradle'
+ext.configurePublish(config.componentsGroupId, archivesBaseName, project.ext.description)
+
+preBuild.dependsOn updateBuiltInExtensionVersion
diff --git a/mobile/android/android-components/components/feature/readerview/proguard-rules.pro b/mobile/android/android-components/components/feature/readerview/proguard-rules.pro
new file mode 100644
index 0000000000..f1b424510d
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/AndroidManifest.xml b/mobile/android/android-components/components/feature/readerview/src/main/AndroidManifest.xml
new file mode 100644
index 0000000000..1eccdee26a
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/AndroidManifest.xml
@@ -0,0 +1,7 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <application android:supportsRtl="true" />
+</manifest>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/manifest.template.json b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/manifest.template.json
new file mode 100644
index 0000000000..616b2036eb
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/manifest.template.json
@@ -0,0 +1,30 @@
+{
+  "manifest_version": 2,
+  "browser_specific_settings": {
+    "gecko": {
+      "id": "readerview@mozac.org"
+    }
+  },
+  "name": "Mozilla Android Components - ReaderView",
+  "version": "${version}",
+  "content_scripts": [
+    {
+      "matches": ["<all_urls>"],
+      "js": ["readability/readability-readerable-0.4.2.js", "readerview-content.js"],
+      "run_at": "document_idle"
+    }
+  ],
+  "background": {
+    "scripts": ["readerview-background.js"],
+    "persistent": false
+  },
+  "permissions": [
+    "mozillaAddons",
+    "geckoViewAddons",
+    "nativeMessaging",
+    "nativeMessagingFromContent",
+    "storage",
+    "tabs",
+    "<all_urls>"
+  ]
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readability/JSDOMParser-0.4.2.js b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readability/JSDOMParser-0.4.2.js
new file mode 100644
index 0000000000..a6a7f24666
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readability/JSDOMParser-0.4.2.js
@@ -0,0 +1,1196 @@
+/*eslint-env es6:false*/
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * This is a relatively lightweight DOMParser that is safe to use in a web
+ * worker. This is far from a complete DOM implementation; however, it should
+ * contain the minimal set of functionality necessary for Readability.js.
+ *
+ * Aside from not implementing the full DOM API, there are other quirks to be
+ * aware of when using the JSDOMParser:
+ *
+ *   1) Properly formed HTML/XML must be used. This means you should be extra
+ *      careful when using this parser on anything received directly from an
+ *      XMLHttpRequest. Providing a serialized string from an XMLSerializer,
+ *      however, should be safe (since the browser's XMLSerializer should
+ *      generate valid HTML/XML). Therefore, if parsing a document from an XHR,
+ *      the recommended approach is to do the XHR in the main thread, use
+ *      XMLSerializer.serializeToString() on the responseXML, and pass the
+ *      resulting string to the worker.
+ *
+ *   2) Live NodeLists are not supported. DOM methods and properties such as
+ *      getElementsByTagName() and childNodes return standard arrays. If you
+ *      want these lists to be updated when nodes are removed or added to the
+ *      document, you must take care to manually update them yourself.
+ */
+(function (global) {
+
+  // XML only defines these and the numeric ones:
+
+  var entityTable = {
+    "lt": "<",
+    "gt": ">",
+    "amp": "&",
+    "quot": '"',
+    "apos": "'",
+  };
+
+  var reverseEntityTable = {
+    "<": "&lt;",
+    ">": "&gt;",
+    "&": "&amp;",
+    '"': "&quot;",
+    "'": "&apos;",
+  };
+
+  function encodeTextContentHTML(s) {
+    return s.replace(/[&<>]/g, function(x) {
+      return reverseEntityTable[x];
+    });
+  }
+
+  function encodeHTML(s) {
+    return s.replace(/[&<>'"]/g, function(x) {
+      return reverseEntityTable[x];
+    });
+  }
+
+  function decodeHTML(str) {
+    return str.replace(/&(quot|amp|apos|lt|gt);/g, function(match, tag) {
+      return entityTable[tag];
+    }).replace(/&#(?:x([0-9a-z]{1,4})|([0-9]{1,4}));/gi, function(match, hex, numStr) {
+      var num = parseInt(hex || numStr, hex ? 16 : 10); // read num
+      return String.fromCharCode(num);
+    });
+  }
+
+  // When a style is set in JS, map it to the corresponding CSS attribute
+  var styleMap = {
+    "alignmentBaseline": "alignment-baseline",
+    "background": "background",
+    "backgroundAttachment": "background-attachment",
+    "backgroundClip": "background-clip",
+    "backgroundColor": "background-color",
+    "backgroundImage": "background-image",
+    "backgroundOrigin": "background-origin",
+    "backgroundPosition": "background-position",
+    "backgroundPositionX": "background-position-x",
+    "backgroundPositionY": "background-position-y",
+    "backgroundRepeat": "background-repeat",
+    "backgroundRepeatX": "background-repeat-x",
+    "backgroundRepeatY": "background-repeat-y",
+    "backgroundSize": "background-size",
+    "baselineShift": "baseline-shift",
+    "border": "border",
+    "borderBottom": "border-bottom",
+    "borderBottomColor": "border-bottom-color",
+    "borderBottomLeftRadius": "border-bottom-left-radius",
+    "borderBottomRightRadius": "border-bottom-right-radius",
+    "borderBottomStyle": "border-bottom-style",
+    "borderBottomWidth": "border-bottom-width",
+    "borderCollapse": "border-collapse",
+    "borderColor": "border-color",
+    "borderImage": "border-image",
+    "borderImageOutset": "border-image-outset",
+    "borderImageRepeat": "border-image-repeat",
+    "borderImageSlice": "border-image-slice",
+    "borderImageSource": "border-image-source",
+    "borderImageWidth": "border-image-width",
+    "borderLeft": "border-left",
+    "borderLeftColor": "border-left-color",
+    "borderLeftStyle": "border-left-style",
+    "borderLeftWidth": "border-left-width",
+    "borderRadius": "border-radius",
+    "borderRight": "border-right",
+    "borderRightColor": "border-right-color",
+    "borderRightStyle": "border-right-style",
+    "borderRightWidth": "border-right-width",
+    "borderSpacing": "border-spacing",
+    "borderStyle": "border-style",
+    "borderTop": "border-top",
+    "borderTopColor": "border-top-color",
+    "borderTopLeftRadius": "border-top-left-radius",
+    "borderTopRightRadius": "border-top-right-radius",
+    "borderTopStyle": "border-top-style",
+    "borderTopWidth": "border-top-width",
+    "borderWidth": "border-width",
+    "bottom": "bottom",
+    "boxShadow": "box-shadow",
+    "boxSizing": "box-sizing",
+    "captionSide": "caption-side",
+    "clear": "clear",
+    "clip": "clip",
+    "clipPath": "clip-path",
+    "clipRule": "clip-rule",
+    "color": "color",
+    "colorInterpolation": "color-interpolation",
+    "colorInterpolationFilters": "color-interpolation-filters",
+    "colorProfile": "color-profile",
+    "colorRendering": "color-rendering",
+    "content": "content",
+    "counterIncrement": "counter-increment",
+    "counterReset": "counter-reset",
+    "cursor": "cursor",
+    "direction": "direction",
+    "display": "display",
+    "dominantBaseline": "dominant-baseline",
+    "emptyCells": "empty-cells",
+    "enableBackground": "enable-background",
+    "fill": "fill",
+    "fillOpacity": "fill-opacity",
+    "fillRule": "fill-rule",
+    "filter": "filter",
+    "cssFloat": "float",
+    "floodColor": "flood-color",
+    "floodOpacity": "flood-opacity",
+    "font": "font",
+    "fontFamily": "font-family",
+    "fontSize": "font-size",
+    "fontStretch": "font-stretch",
+    "fontStyle": "font-style",
+    "fontVariant": "font-variant",
+    "fontWeight": "font-weight",
+    "glyphOrientationHorizontal": "glyph-orientation-horizontal",
+    "glyphOrientationVertical": "glyph-orientation-vertical",
+    "height": "height",
+    "imageRendering": "image-rendering",
+    "kerning": "kerning",
+    "left": "left",
+    "letterSpacing": "letter-spacing",
+    "lightingColor": "lighting-color",
+    "lineHeight": "line-height",
+    "listStyle": "list-style",
+    "listStyleImage": "list-style-image",
+    "listStylePosition": "list-style-position",
+    "listStyleType": "list-style-type",
+    "margin": "margin",
+    "marginBottom": "margin-bottom",
+    "marginLeft": "margin-left",
+    "marginRight": "margin-right",
+    "marginTop": "margin-top",
+    "marker": "marker",
+    "markerEnd": "marker-end",
+    "markerMid": "marker-mid",
+    "markerStart": "marker-start",
+    "mask": "mask",
+    "maxHeight": "max-height",
+    "maxWidth": "max-width",
+    "minHeight": "min-height",
+    "minWidth": "min-width",
+    "opacity": "opacity",
+    "orphans": "orphans",
+    "outline": "outline",
+    "outlineColor": "outline-color",
+    "outlineOffset": "outline-offset",
+    "outlineStyle": "outline-style",
+    "outlineWidth": "outline-width",
+    "overflow": "overflow",
+    "overflowX": "overflow-x",
+    "overflowY": "overflow-y",
+    "padding": "padding",
+    "paddingBottom": "padding-bottom",
+    "paddingLeft": "padding-left",
+    "paddingRight": "padding-right",
+    "paddingTop": "padding-top",
+    "page": "page",
+    "pageBreakAfter": "page-break-after",
+    "pageBreakBefore": "page-break-before",
+    "pageBreakInside": "page-break-inside",
+    "pointerEvents": "pointer-events",
+    "position": "position",
+    "quotes": "quotes",
+    "resize": "resize",
+    "right": "right",
+    "shapeRendering": "shape-rendering",
+    "size": "size",
+    "speak": "speak",
+    "src": "src",
+    "stopColor": "stop-color",
+    "stopOpacity": "stop-opacity",
+    "stroke": "stroke",
+    "strokeDasharray": "stroke-dasharray",
+    "strokeDashoffset": "stroke-dashoffset",
+    "strokeLinecap": "stroke-linecap",
+    "strokeLinejoin": "stroke-linejoin",
+    "strokeMiterlimit": "stroke-miterlimit",
+    "strokeOpacity": "stroke-opacity",
+    "strokeWidth": "stroke-width",
+    "tableLayout": "table-layout",
+    "textAlign": "text-align",
+    "textAnchor": "text-anchor",
+    "textDecoration": "text-decoration",
+    "textIndent": "text-indent",
+    "textLineThrough": "text-line-through",
+    "textLineThroughColor": "text-line-through-color",
+    "textLineThroughMode": "text-line-through-mode",
+    "textLineThroughStyle": "text-line-through-style",
+    "textLineThroughWidth": "text-line-through-width",
+    "textOverflow": "text-overflow",
+    "textOverline": "text-overline",
+    "textOverlineColor": "text-overline-color",
+    "textOverlineMode": "text-overline-mode",
+    "textOverlineStyle": "text-overline-style",
+    "textOverlineWidth": "text-overline-width",
+    "textRendering": "text-rendering",
+    "textShadow": "text-shadow",
+    "textTransform": "text-transform",
+    "textUnderline": "text-underline",
+    "textUnderlineColor": "text-underline-color",
+    "textUnderlineMode": "text-underline-mode",
+    "textUnderlineStyle": "text-underline-style",
+    "textUnderlineWidth": "text-underline-width",
+    "top": "top",
+    "unicodeBidi": "unicode-bidi",
+    "unicodeRange": "unicode-range",
+    "vectorEffect": "vector-effect",
+    "verticalAlign": "vertical-align",
+    "visibility": "visibility",
+    "whiteSpace": "white-space",
+    "widows": "widows",
+    "width": "width",
+    "wordBreak": "word-break",
+    "wordSpacing": "word-spacing",
+    "wordWrap": "word-wrap",
+    "writingMode": "writing-mode",
+    "zIndex": "z-index",
+    "zoom": "zoom",
+  };
+
+  // Elements that can be self-closing
+  var voidElems = {
+    "area": true,
+    "base": true,
+    "br": true,
+    "col": true,
+    "command": true,
+    "embed": true,
+    "hr": true,
+    "img": true,
+    "input": true,
+    "link": true,
+    "meta": true,
+    "param": true,
+    "source": true,
+    "wbr": true
+  };
+
+  var whitespace = [" ", "\t", "\n", "\r"];
+
+  // See https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType
+  var nodeTypes = {
+    ELEMENT_NODE: 1,
+    ATTRIBUTE_NODE: 2,
+    TEXT_NODE: 3,
+    CDATA_SECTION_NODE: 4,
+    ENTITY_REFERENCE_NODE: 5,
+    ENTITY_NODE: 6,
+    PROCESSING_INSTRUCTION_NODE: 7,
+    COMMENT_NODE: 8,
+    DOCUMENT_NODE: 9,
+    DOCUMENT_TYPE_NODE: 10,
+    DOCUMENT_FRAGMENT_NODE: 11,
+    NOTATION_NODE: 12
+  };
+
+  function getElementsByTagName(tag) {
+    tag = tag.toUpperCase();
+    var elems = [];
+    var allTags = (tag === "*");
+    function getElems(node) {
+      var length = node.children.length;
+      for (var i = 0; i < length; i++) {
+        var child = node.children[i];
+        if (allTags || (child.tagName === tag))
+          elems.push(child);
+        getElems(child);
+      }
+    }
+    getElems(this);
+    elems._isLiveNodeList = true;
+    return elems;
+  }
+
+  var Node = function () {};
+
+  Node.prototype = {
+    attributes: null,
+    childNodes: null,
+    localName: null,
+    nodeName: null,
+    parentNode: null,
+    textContent: null,
+    nextSibling: null,
+    previousSibling: null,
+
+    get firstChild() {
+      return this.childNodes[0] || null;
+    },
+
+    get firstElementChild() {
+      return this.children[0] || null;
+    },
+
+    get lastChild() {
+      return this.childNodes[this.childNodes.length - 1] || null;
+    },
+
+    get lastElementChild() {
+      return this.children[this.children.length - 1] || null;
+    },
+
+    appendChild: function (child) {
+      if (child.parentNode) {
+        child.parentNode.removeChild(child);
+      }
+
+      var last = this.lastChild;
+      if (last)
+        last.nextSibling = child;
+      child.previousSibling = last;
+
+      if (child.nodeType === Node.ELEMENT_NODE) {
+        child.previousElementSibling = this.children[this.children.length - 1] || null;
+        this.children.push(child);
+        child.previousElementSibling && (child.previousElementSibling.nextElementSibling = child);
+      }
+      this.childNodes.push(child);
+      child.parentNode = this;
+    },
+
+    removeChild: function (child) {
+      var childNodes = this.childNodes;
+      var childIndex = childNodes.indexOf(child);
+      if (childIndex === -1) {
+        throw "removeChild: node not found";
+      } else {
+        child.parentNode = null;
+        var prev = child.previousSibling;
+        var next = child.nextSibling;
+        if (prev)
+          prev.nextSibling = next;
+        if (next)
+          next.previousSibling = prev;
+
+        if (child.nodeType === Node.ELEMENT_NODE) {
+          prev = child.previousElementSibling;
+          next = child.nextElementSibling;
+          if (prev)
+            prev.nextElementSibling = next;
+          if (next)
+            next.previousElementSibling = prev;
+          this.children.splice(this.children.indexOf(child), 1);
+        }
+
+        child.previousSibling = child.nextSibling = null;
+        child.previousElementSibling = child.nextElementSibling = null;
+
+        return childNodes.splice(childIndex, 1)[0];
+      }
+    },
+
+    replaceChild: function (newNode, oldNode) {
+      var childNodes = this.childNodes;
+      var childIndex = childNodes.indexOf(oldNode);
+      if (childIndex === -1) {
+        throw "replaceChild: node not found";
+      } else {
+        // This will take care of updating the new node if it was somewhere else before:
+        if (newNode.parentNode)
+          newNode.parentNode.removeChild(newNode);
+
+        childNodes[childIndex] = newNode;
+
+        // update the new node's sibling properties, and its new siblings' sibling properties
+        newNode.nextSibling = oldNode.nextSibling;
+        newNode.previousSibling = oldNode.previousSibling;
+        if (newNode.nextSibling)
+          newNode.nextSibling.previousSibling = newNode;
+        if (newNode.previousSibling)
+          newNode.previousSibling.nextSibling = newNode;
+
+        newNode.parentNode = this;
+
+        // Now deal with elements before we clear out those values for the old node,
+        // because it can help us take shortcuts here:
+        if (newNode.nodeType === Node.ELEMENT_NODE) {
+          if (oldNode.nodeType === Node.ELEMENT_NODE) {
+            // Both were elements, which makes this easier, we just swap things out:
+            newNode.previousElementSibling = oldNode.previousElementSibling;
+            newNode.nextElementSibling = oldNode.nextElementSibling;
+            if (newNode.previousElementSibling)
+              newNode.previousElementSibling.nextElementSibling = newNode;
+            if (newNode.nextElementSibling)
+              newNode.nextElementSibling.previousElementSibling = newNode;
+            this.children[this.children.indexOf(oldNode)] = newNode;
+          } else {
+            // Hard way:
+            newNode.previousElementSibling = (function() {
+              for (var i = childIndex - 1; i >= 0; i--) {
+                if (childNodes[i].nodeType === Node.ELEMENT_NODE)
+                  return childNodes[i];
+              }
+              return null;
+            })();
+            if (newNode.previousElementSibling) {
+              newNode.nextElementSibling = newNode.previousElementSibling.nextElementSibling;
+            } else {
+              newNode.nextElementSibling = (function() {
+                for (var i = childIndex + 1; i < childNodes.length; i++) {
+                  if (childNodes[i].nodeType === Node.ELEMENT_NODE)
+                    return childNodes[i];
+                }
+                return null;
+              })();
+            }
+            if (newNode.previousElementSibling)
+              newNode.previousElementSibling.nextElementSibling = newNode;
+            if (newNode.nextElementSibling)
+              newNode.nextElementSibling.previousElementSibling = newNode;
+
+            if (newNode.nextElementSibling)
+              this.children.splice(this.children.indexOf(newNode.nextElementSibling), 0, newNode);
+            else
+              this.children.push(newNode);
+          }
+        } else if (oldNode.nodeType === Node.ELEMENT_NODE) {
+          // new node is not an element node.
+          // if the old one was, update its element siblings:
+          if (oldNode.previousElementSibling)
+            oldNode.previousElementSibling.nextElementSibling = oldNode.nextElementSibling;
+          if (oldNode.nextElementSibling)
+            oldNode.nextElementSibling.previousElementSibling = oldNode.previousElementSibling;
+          this.children.splice(this.children.indexOf(oldNode), 1);
+
+          // If the old node wasn't an element, neither the new nor the old node was an element,
+          // and the children array and its members shouldn't need any updating.
+        }
+
+
+        oldNode.parentNode = null;
+        oldNode.previousSibling = null;
+        oldNode.nextSibling = null;
+        if (oldNode.nodeType === Node.ELEMENT_NODE) {
+          oldNode.previousElementSibling = null;
+          oldNode.nextElementSibling = null;
+        }
+        return oldNode;
+      }
+    },
+
+    __JSDOMParser__: true,
+  };
+
+  for (var nodeType in nodeTypes) {
+    Node[nodeType] = Node.prototype[nodeType] = nodeTypes[nodeType];
+  }
+
+  var Attribute = function (name, value) {
+    this.name = name;
+    this._value = value;
+  };
+
+  Attribute.prototype = {
+    get value() {
+      return this._value;
+    },
+    setValue: function(newValue) {
+      this._value = newValue;
+    },
+    getEncodedValue: function() {
+      return encodeHTML(this._value);
+    },
+  };
+
+  var Comment = function () {
+    this.childNodes = [];
+  };
+
+  Comment.prototype = {
+    __proto__: Node.prototype,
+
+    nodeName: "#comment",
+    nodeType: Node.COMMENT_NODE
+  };
+
+  var Text = function () {
+    this.childNodes = [];
+  };
+
+  Text.prototype = {
+    __proto__: Node.prototype,
+
+    nodeName: "#text",
+    nodeType: Node.TEXT_NODE,
+    get textContent() {
+      if (typeof this._textContent === "undefined") {
+        this._textContent = decodeHTML(this._innerHTML || "");
+      }
+      return this._textContent;
+    },
+    get innerHTML() {
+      if (typeof this._innerHTML === "undefined") {
+        this._innerHTML = encodeTextContentHTML(this._textContent || "");
+      }
+      return this._innerHTML;
+    },
+
+    set innerHTML(newHTML) {
+      this._innerHTML = newHTML;
+      delete this._textContent;
+    },
+    set textContent(newText) {
+      this._textContent = newText;
+      delete this._innerHTML;
+    },
+  };
+
+  var Document = function (url) {
+    this.documentURI = url;
+    this.styleSheets = [];
+    this.childNodes = [];
+    this.children = [];
+  };
+
+  Document.prototype = {
+    __proto__: Node.prototype,
+
+    nodeName: "#document",
+    nodeType: Node.DOCUMENT_NODE,
+    title: "",
+
+    getElementsByTagName: getElementsByTagName,
+
+    getElementById: function (id) {
+      function getElem(node) {
+        var length = node.children.length;
+        if (node.id === id)
+          return node;
+        for (var i = 0; i < length; i++) {
+          var el = getElem(node.children[i]);
+          if (el)
+            return el;
+        }
+        return null;
+      }
+      return getElem(this);
+    },
+
+    createElement: function (tag) {
+      var node = new Element(tag);
+      return node;
+    },
+
+    createTextNode: function (text) {
+      var node = new Text();
+      node.textContent = text;
+      return node;
+    },
+
+    get baseURI() {
+      if (!this.hasOwnProperty("_baseURI")) {
+        this._baseURI = this.documentURI;
+        var baseElements = this.getElementsByTagName("base");
+        var href = baseElements[0] && baseElements[0].getAttribute("href");
+        if (href) {
+          try {
+            this._baseURI = (new URL(href, this._baseURI)).href;
+          } catch (ex) {/* Just fall back to documentURI */}
+        }
+      }
+      return this._baseURI;
+    },
+  };
+
+  var Element = function (tag) {
+    // We use this to find the closing tag.
+    this._matchingTag = tag;
+    // We're explicitly a non-namespace aware parser, we just pretend it's all HTML.
+    var lastColonIndex = tag.lastIndexOf(":");
+    if (lastColonIndex != -1) {
+      tag = tag.substring(lastColonIndex + 1);
+    }
+    this.attributes = [];
+    this.childNodes = [];
+    this.children = [];
+    this.nextElementSibling = this.previousElementSibling = null;
+    this.localName = tag.toLowerCase();
+    this.tagName = tag.toUpperCase();
+    this.style = new Style(this);
+  };
+
+  Element.prototype = {
+    __proto__: Node.prototype,
+
+    nodeType: Node.ELEMENT_NODE,
+
+    getElementsByTagName: getElementsByTagName,
+
+    get className() {
+      return this.getAttribute("class") || "";
+    },
+
+    set className(str) {
+      this.setAttribute("class", str);
+    },
+
+    get id() {
+      return this.getAttribute("id") || "";
+    },
+
+    set id(str) {
+      this.setAttribute("id", str);
+    },
+
+    get href() {
+      return this.getAttribute("href") || "";
+    },
+
+    set href(str) {
+      this.setAttribute("href", str);
+    },
+
+    get src() {
+      return this.getAttribute("src") || "";
+    },
+
+    set src(str) {
+      this.setAttribute("src", str);
+    },
+
+    get srcset() {
+      return this.getAttribute("srcset") || "";
+    },
+
+    set srcset(str) {
+      this.setAttribute("srcset", str);
+    },
+
+    get nodeName() {
+      return this.tagName;
+    },
+
+    get innerHTML() {
+      function getHTML(node) {
+        var i = 0;
+        for (i = 0; i < node.childNodes.length; i++) {
+          var child = node.childNodes[i];
+          if (child.localName) {
+            arr.push("<" + child.localName);
+
+            // serialize attribute list
+            for (var j = 0; j < child.attributes.length; j++) {
+              var attr = child.attributes[j];
+              // the attribute value will be HTML escaped.
+              var val = attr.getEncodedValue();
+              var quote = (val.indexOf('"') === -1 ? '"' : "'");
+              arr.push(" " + attr.name + "=" + quote + val + quote);
+            }
+
+            if (child.localName in voidElems && !child.childNodes.length) {
+              // if this is a self-closing element, end it here
+              arr.push("/>");
+            } else {
+              // otherwise, add its children
+              arr.push(">");
+              getHTML(child);
+              arr.push("</" + child.localName + ">");
+            }
+          } else {
+            // This is a text node, so asking for innerHTML won't recurse.
+            arr.push(child.innerHTML);
+          }
+        }
+      }
+
+      // Using Array.join() avoids the overhead from lazy string concatenation.
+      var arr = [];
+      getHTML(this);
+      return arr.join("");
+    },
+
+    set innerHTML(html) {
+      var parser = new JSDOMParser();
+      var node = parser.parse(html);
+      var i;
+      for (i = this.childNodes.length; --i >= 0;) {
+        this.childNodes[i].parentNode = null;
+      }
+      this.childNodes = node.childNodes;
+      this.children = node.children;
+      for (i = this.childNodes.length; --i >= 0;) {
+        this.childNodes[i].parentNode = this;
+      }
+    },
+
+    set textContent(text) {
+      // clear parentNodes for existing children
+      for (var i = this.childNodes.length; --i >= 0;) {
+        this.childNodes[i].parentNode = null;
+      }
+
+      var node = new Text();
+      this.childNodes = [ node ];
+      this.children = [];
+      node.textContent = text;
+      node.parentNode = this;
+    },
+
+    get textContent() {
+      function getText(node) {
+        var nodes = node.childNodes;
+        for (var i = 0; i < nodes.length; i++) {
+          var child = nodes[i];
+          if (child.nodeType === 3) {
+            text.push(child.textContent);
+          } else {
+            getText(child);
+          }
+        }
+      }
+
+      // Using Array.join() avoids the overhead from lazy string concatenation.
+      // See http://blog.cdleary.com/2012/01/string-representation-in-spidermonkey/#ropes
+      var text = [];
+      getText(this);
+      return text.join("");
+    },
+
+    getAttribute: function (name) {
+      for (var i = this.attributes.length; --i >= 0;) {
+        var attr = this.attributes[i];
+        if (attr.name === name) {
+          return attr.value;
+        }
+      }
+      return undefined;
+    },
+
+    setAttribute: function (name, value) {
+      for (var i = this.attributes.length; --i >= 0;) {
+        var attr = this.attributes[i];
+        if (attr.name === name) {
+          attr.setValue(value);
+          return;
+        }
+      }
+      this.attributes.push(new Attribute(name, value));
+    },
+
+    removeAttribute: function (name) {
+      for (var i = this.attributes.length; --i >= 0;) {
+        var attr = this.attributes[i];
+        if (attr.name === name) {
+          this.attributes.splice(i, 1);
+          break;
+        }
+      }
+    },
+
+    hasAttribute: function (name) {
+      return this.attributes.some(function (attr) {
+        return attr.name == name;
+      });
+    },
+  };
+
+  var Style = function (node) {
+    this.node = node;
+  };
+
+  // getStyle() and setStyle() use the style attribute string directly. This
+  // won't be very efficient if there are a lot of style manipulations, but
+  // it's the easiest way to make sure the style attribute string and the JS
+  // style property stay in sync. Readability.js doesn't do many style
+  // manipulations, so this should be okay.
+  Style.prototype = {
+    getStyle: function (styleName) {
+      var attr = this.node.getAttribute("style");
+      if (!attr)
+        return undefined;
+
+      var styles = attr.split(";");
+      for (var i = 0; i < styles.length; i++) {
+        var style = styles[i].split(":");
+        var name = style[0].trim();
+        if (name === styleName)
+          return style[1].trim();
+      }
+
+      return undefined;
+    },
+
+    setStyle: function (styleName, styleValue) {
+      var value = this.node.getAttribute("style") || "";
+      var index = 0;
+      do {
+        var next = value.indexOf(";", index) + 1;
+        var length = next - index - 1;
+        var style = (length > 0 ? value.substr(index, length) : value.substr(index));
+        if (style.substr(0, style.indexOf(":")).trim() === styleName) {
+          value = value.substr(0, index).trim() + (next ? " " + value.substr(next).trim() : "");
+          break;
+        }
+        index = next;
+      } while (index);
+
+      value += " " + styleName + ": " + styleValue + ";";
+      this.node.setAttribute("style", value.trim());
+    }
+  };
+
+  // For each item in styleMap, define a getter and setter on the style
+  // property.
+  for (var jsName in styleMap) {
+    (function (cssName) {
+      Style.prototype.__defineGetter__(jsName, function () {
+        return this.getStyle(cssName);
+      });
+      Style.prototype.__defineSetter__(jsName, function (value) {
+        this.setStyle(cssName, value);
+      });
+    })(styleMap[jsName]);
+  }
+
+  var JSDOMParser = function () {
+    this.currentChar = 0;
+
+    // In makeElementNode() we build up many strings one char at a time. Using
+    // += for this results in lots of short-lived intermediate strings. It's
+    // better to build an array of single-char strings and then join() them
+    // together at the end. And reusing a single array (i.e. |this.strBuf|)
+    // over and over for this purpose uses less memory than using a new array
+    // for each string.
+    this.strBuf = [];
+
+    // Similarly, we reuse this array to return the two arguments from
+    // makeElementNode(), which saves us from having to allocate a new array
+    // every time.
+    this.retPair = [];
+
+    this.errorState = "";
+  };
+
+  JSDOMParser.prototype = {
+    error: function(m) {
+      if (typeof dump !== "undefined") {
+        dump("JSDOMParser error: " + m + "\n");
+      } else if (typeof console !== "undefined") {
+        console.log("JSDOMParser error: " + m + "\n");
+      }
+      this.errorState += m + "\n";
+    },
+
+    /**
+     * Look at the next character without advancing the index.
+     */
+    peekNext: function () {
+      return this.html[this.currentChar];
+    },
+
+    /**
+     * Get the next character and advance the index.
+     */
+    nextChar: function () {
+      return this.html[this.currentChar++];
+    },
+
+    /**
+     * Called after a quote character is read. This finds the next quote
+     * character and returns the text string in between.
+     */
+    readString: function (quote) {
+      var str;
+      var n = this.html.indexOf(quote, this.currentChar);
+      if (n === -1) {
+        this.currentChar = this.html.length;
+        str = null;
+      } else {
+        str = this.html.substring(this.currentChar, n);
+        this.currentChar = n + 1;
+      }
+
+      return str;
+    },
+
+    /**
+     * Called when parsing a node. This finds the next name/value attribute
+     * pair and adds the result to the attributes list.
+     */
+    readAttribute: function (node) {
+      var name = "";
+
+      var n = this.html.indexOf("=", this.currentChar);
+      if (n === -1) {
+        this.currentChar = this.html.length;
+      } else {
+        // Read until a '=' character is hit; this will be the attribute key
+        name = this.html.substring(this.currentChar, n);
+        this.currentChar = n + 1;
+      }
+
+      if (!name)
+        return;
+
+      // After a '=', we should see a '"' for the attribute value
+      var c = this.nextChar();
+      if (c !== '"' && c !== "'") {
+        this.error("Error reading attribute " + name + ", expecting '\"'");
+        return;
+      }
+
+      // Read the attribute value (and consume the matching quote)
+      var value = this.readString(c);
+
+      node.attributes.push(new Attribute(name, decodeHTML(value)));
+
+      return;
+    },
+
+    /**
+     * Parses and returns an Element node. This is called after a '<' has been
+     * read.
+     *
+     * @returns an array; the first index of the array is the parsed node;
+     *          the second index is a boolean indicating whether this is a void
+     *          Element
+     */
+    makeElementNode: function (retPair) {
+      var c = this.nextChar();
+
+      // Read the Element tag name
+      var strBuf = this.strBuf;
+      strBuf.length = 0;
+      while (whitespace.indexOf(c) == -1 && c !== ">" && c !== "/") {
+        if (c === undefined)
+          return false;
+        strBuf.push(c);
+        c = this.nextChar();
+      }
+      var tag = strBuf.join("");
+
+      if (!tag)
+        return false;
+
+      var node = new Element(tag);
+
+      // Read Element attributes
+      while (c !== "/" && c !== ">") {
+        if (c === undefined)
+          return false;
+        while (whitespace.indexOf(this.html[this.currentChar++]) != -1) {
+          // Advance cursor to first non-whitespace char.
+        }
+        this.currentChar--;
+        c = this.nextChar();
+        if (c !== "/" && c !== ">") {
+          --this.currentChar;
+          this.readAttribute(node);
+        }
+      }
+
+      // If this is a self-closing tag, read '/>'
+      var closed = false;
+      if (c === "/") {
+        closed = true;
+        c = this.nextChar();
+        if (c !== ">") {
+          this.error("expected '>' to close " + tag);
+          return false;
+        }
+      }
+
+      retPair[0] = node;
+      retPair[1] = closed;
+      return true;
+    },
+
+    /**
+     * If the current input matches this string, advance the input index;
+     * otherwise, do nothing.
+     *
+     * @returns whether input matched string
+     */
+    match: function (str) {
+      var strlen = str.length;
+      if (this.html.substr(this.currentChar, strlen).toLowerCase() === str.toLowerCase()) {
+        this.currentChar += strlen;
+        return true;
+      }
+      return false;
+    },
+
+    /**
+     * Searches the input until a string is found and discards all input up to
+     * and including the matched string.
+     */
+    discardTo: function (str) {
+      var index = this.html.indexOf(str, this.currentChar) + str.length;
+      if (index === -1)
+        this.currentChar = this.html.length;
+      this.currentChar = index;
+    },
+
+    /**
+     * Reads child nodes for the given node.
+     */
+    readChildren: function (node) {
+      var child;
+      while ((child = this.readNode())) {
+        // Don't keep Comment nodes
+        if (child.nodeType !== 8) {
+          node.appendChild(child);
+        }
+      }
+    },
+
+    discardNextComment: function() {
+      if (this.match("--")) {
+        this.discardTo("-->");
+      } else {
+        var c = this.nextChar();
+        while (c !== ">") {
+          if (c === undefined)
+            return null;
+          if (c === '"' || c === "'")
+            this.readString(c);
+          c = this.nextChar();
+        }
+      }
+      return new Comment();
+    },
+
+
+    /**
+     * Reads the next child node from the input. If we're reading a closing
+     * tag, or if we've reached the end of input, return null.
+     *
+     * @returns the node
+     */
+    readNode: function () {
+      var c = this.nextChar();
+
+      if (c === undefined)
+        return null;
+
+      // Read any text as Text node
+      var textNode;
+      if (c !== "<") {
+        --this.currentChar;
+        textNode = new Text();
+        var n = this.html.indexOf("<", this.currentChar);
+        if (n === -1) {
+          textNode.innerHTML = this.html.substring(this.currentChar, this.html.length);
+          this.currentChar = this.html.length;
+        } else {
+          textNode.innerHTML = this.html.substring(this.currentChar, n);
+          this.currentChar = n;
+        }
+        return textNode;
+      }
+
+      if (this.match("![CDATA[")) {
+        var endChar = this.html.indexOf("]]>", this.currentChar);
+        if (endChar === -1) {
+          this.error("unclosed CDATA section");
+          return null;
+        }
+        textNode = new Text();
+        textNode.textContent = this.html.substring(this.currentChar, endChar);
+        this.currentChar = endChar + ("]]>").length;
+        return textNode;
+      }
+
+      c = this.peekNext();
+
+      // Read Comment node. Normally, Comment nodes know their inner
+      // textContent, but we don't really care about Comment nodes (we throw
+      // them away in readChildren()). So just returning an empty Comment node
+      // here is sufficient.
+      if (c === "!" || c === "?") {
+        // We're still before the ! or ? that is starting this comment:
+        this.currentChar++;
+        return this.discardNextComment();
+      }
+
+      // If we're reading a closing tag, return null. This means we've reached
+      // the end of this set of child nodes.
+      if (c === "/") {
+        --this.currentChar;
+        return null;
+      }
+
+      // Otherwise, we're looking at an Element node
+      var result = this.makeElementNode(this.retPair);
+      if (!result)
+        return null;
+
+      var node = this.retPair[0];
+      var closed = this.retPair[1];
+      var localName = node.localName;
+
+      // If this isn't a void Element, read its child nodes
+      if (!closed) {
+        this.readChildren(node);
+        var closingTag = "</" + node._matchingTag + ">";
+        if (!this.match(closingTag)) {
+          this.error("expected '" + closingTag + "' and got " + this.html.substr(this.currentChar, closingTag.length));
+          return null;
+        }
+      }
+
+      // Only use the first title, because SVG might have other
+      // title elements which we don't care about (medium.com
+      // does this, at least).
+      if (localName === "title" && !this.doc.title) {
+        this.doc.title = node.textContent.trim();
+      } else if (localName === "head") {
+        this.doc.head = node;
+      } else if (localName === "body") {
+        this.doc.body = node;
+      } else if (localName === "html") {
+        this.doc.documentElement = node;
+      }
+
+      return node;
+    },
+
+    /**
+     * Parses an HTML string and returns a JS implementation of the Document.
+     */
+    parse: function (html, url) {
+      this.html = html;
+      var doc = this.doc = new Document(url);
+      this.readChildren(doc);
+
+      // If this is an HTML document, remove root-level children except for the
+      // <html> node
+      if (doc.documentElement) {
+        for (var i = doc.childNodes.length; --i >= 0;) {
+          var child = doc.childNodes[i];
+          if (child !== doc.documentElement) {
+            doc.removeChild(child);
+          }
+        }
+      }
+
+      return doc;
+    }
+  };
+
+  // Attach the standard DOM types to the global scope
+  global.Node = Node;
+  global.Comment = Comment;
+  global.Document = Document;
+  global.Element = Element;
+  global.Text = Text;
+
+  // Attach JSDOMParser to the global scope
+  global.JSDOMParser = JSDOMParser;
+
+})(this);
+
+if (typeof module === "object") {
+  module.exports = this.JSDOMParser;
+}
\ No newline at end of file
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readability/readability-0.4.2.js b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readability/readability-0.4.2.js
new file mode 100644
index 0000000000..ce06df459d
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readability/readability-0.4.2.js
@@ -0,0 +1,2283 @@
+/*eslint-env es6:false*/
+/*
+ * Copyright (c) 2010 Arc90 Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * This code is heavily based on Arc90's readability.js (1.7.1) script
+ * available at: http://code.google.com/p/arc90labs-readability
+ */
+
+/**
+ * Public constructor.
+ * @param {HTMLDocument} doc     The document to parse.
+ * @param {Object}       options The options object.
+ */
+function Readability(doc, options) {
+  // In some older versions, people passed a URI as the first argument. Cope:
+  if (options && options.documentElement) {
+    doc = options;
+    options = arguments[2];
+  } else if (!doc || !doc.documentElement) {
+    throw new Error("First argument to Readability constructor should be a document object.");
+  }
+  options = options || {};
+
+  this._doc = doc;
+  this._docJSDOMParser = this._doc.firstChild.__JSDOMParser__;
+  this._articleTitle = null;
+  this._articleByline = null;
+  this._articleDir = null;
+  this._articleSiteName = null;
+  this._attempts = [];
+
+  // Configurable options
+  this._debug = !!options.debug;
+  this._maxElemsToParse = options.maxElemsToParse || this.DEFAULT_MAX_ELEMS_TO_PARSE;
+  this._nbTopCandidates = options.nbTopCandidates || this.DEFAULT_N_TOP_CANDIDATES;
+  this._charThreshold = options.charThreshold || this.DEFAULT_CHAR_THRESHOLD;
+  this._classesToPreserve = this.CLASSES_TO_PRESERVE.concat(options.classesToPreserve || []);
+  this._keepClasses = !!options.keepClasses;
+  this._serializer = options.serializer || function(el) {
+    return el.innerHTML;
+  };
+  this._disableJSONLD = !!options.disableJSONLD;
+
+  // Start with all flags set
+  this._flags = this.FLAG_STRIP_UNLIKELYS |
+                this.FLAG_WEIGHT_CLASSES |
+                this.FLAG_CLEAN_CONDITIONALLY;
+
+
+  // Control whether log messages are sent to the console
+  if (this._debug) {
+    let logNode = function(node) {
+      if (node.nodeType == node.TEXT_NODE) {
+        return `${node.nodeName} ("${node.textContent}")`;
+      }
+      let attrPairs = Array.from(node.attributes || [], function(attr) {
+        return `${attr.name}="${attr.value}"`;
+      }).join(" ");
+      return `<${node.localName} ${attrPairs}>`;
+    };
+    this.log = function () {
+      if (typeof dump !== "undefined") {
+        var msg = Array.prototype.map.call(arguments, function(x) {
+          return (x && x.nodeName) ? logNode(x) : x;
+        }).join(" ");
+        dump("Reader: (Readability) " + msg + "\n");
+      } else if (typeof console !== "undefined") {
+        let args = Array.from(arguments, arg => {
+          if (arg && arg.nodeType == this.ELEMENT_NODE) {
+            return logNode(arg);
+          }
+          return arg;
+        });
+        args.unshift("Reader: (Readability)");
+        console.log.apply(console, args);
+      }
+    };
+  } else {
+    this.log = function () {};
+  }
+}
+
+Readability.prototype = {
+  FLAG_STRIP_UNLIKELYS: 0x1,
+  FLAG_WEIGHT_CLASSES: 0x2,
+  FLAG_CLEAN_CONDITIONALLY: 0x4,
+
+  // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType
+  ELEMENT_NODE: 1,
+  TEXT_NODE: 3,
+
+  // Max number of nodes supported by this parser. Default: 0 (no limit)
+  DEFAULT_MAX_ELEMS_TO_PARSE: 0,
+
+  // The number of top candidates to consider when analysing how
+  // tight the competition is among candidates.
+  DEFAULT_N_TOP_CANDIDATES: 5,
+
+  // Element tags to score by default.
+  DEFAULT_TAGS_TO_SCORE: "section,h2,h3,h4,h5,h6,p,td,pre".toUpperCase().split(","),
+
+  // The default number of chars an article must have in order to return a result
+  DEFAULT_CHAR_THRESHOLD: 500,
+
+  // All of the regular expressions in use within readability.
+  // Defined up here so we don't instantiate them repeatedly in loops.
+  REGEXPS: {
+    // NOTE: These two regular expressions are duplicated in
+    // Readability-readerable.js. Please keep both copies in sync.
+    unlikelyCandidates: /-ad-|ai2html|banner|breadcrumbs|combx|comment|community|cover-wrap|disqus|extra|footer|gdpr|header|legends|menu|related|remark|replies|rss|shoutbox|sidebar|skyscraper|social|sponsor|supplemental|ad-break|agegate|pagination|pager|popup|yom-remote/i,
+    okMaybeItsACandidate: /and|article|body|column|content|main|shadow/i,
+
+    positive: /article|body|content|entry|hentry|h-entry|main|page|pagination|post|text|blog|story/i,
+    negative: /-ad-|hidden|^hid$| hid$| hid |^hid |banner|combx|comment|com-|contact|foot|footer|footnote|gdpr|masthead|media|meta|outbrain|promo|related|scroll|share|shoutbox|sidebar|skyscraper|sponsor|shopping|tags|tool|widget/i,
+    extraneous: /print|archive|comment|discuss|e[\-]?mail|share|reply|all|login|sign|single|utility/i,
+    byline: /byline|author|dateline|writtenby|p-author/i,
+    replaceFonts: /<(\/?)font[^>]*>/gi,
+    normalize: /\s{2,}/g,
+    videos: /\/\/(www\.)?((dailymotion|youtube|youtube-nocookie|player\.vimeo|v\.qq)\.com|(archive|upload\.wikimedia)\.org|player\.twitch\.tv)/i,
+    shareElements: /(\b|_)(share|sharedaddy)(\b|_)/i,
+    nextLink: /(next|weiter|continue|>([^\|]|$)|»([^\|]|$))/i,
+    prevLink: /(prev|earl|old|new|<|«)/i,
+    tokenize: /\W+/g,
+    whitespace: /^\s*$/,
+    hasContent: /\S$/,
+    hashUrl: /^#.+/,
+    srcsetUrl: /(\S+)(\s+[\d.]+[xw])?(\s*(?:,|$))/g,
+    b64DataUrl: /^data:\s*([^\s;,]+)\s*;\s*base64\s*,/i,
+    // See: https://schema.org/Article
+    jsonLdArticleTypes: /^Article|AdvertiserContentArticle|NewsArticle|AnalysisNewsArticle|AskPublicNewsArticle|BackgroundNewsArticle|OpinionNewsArticle|ReportageNewsArticle|ReviewNewsArticle|Report|SatiricalArticle|ScholarlyArticle|MedicalScholarlyArticle|SocialMediaPosting|BlogPosting|LiveBlogPosting|DiscussionForumPosting|TechArticle|APIReference$/
+  },
+
+  UNLIKELY_ROLES: [ "menu", "menubar", "complementary", "navigation", "alert", "alertdialog", "dialog" ],
+
+  DIV_TO_P_ELEMS: new Set([ "BLOCKQUOTE", "DL", "DIV", "IMG", "OL", "P", "PRE", "TABLE", "UL" ]),
+
+  ALTER_TO_DIV_EXCEPTIONS: ["DIV", "ARTICLE", "SECTION", "P"],
+
+  PRESENTATIONAL_ATTRIBUTES: [ "align", "background", "bgcolor", "border", "cellpadding", "cellspacing", "frame", "hspace", "rules", "style", "valign", "vspace" ],
+
+  DEPRECATED_SIZE_ATTRIBUTE_ELEMS: [ "TABLE", "TH", "TD", "HR", "PRE" ],
+
+  // The commented out elements qualify as phrasing content but tend to be
+  // removed by readability when put into paragraphs, so we ignore them here.
+  PHRASING_ELEMS: [
+    // "CANVAS", "IFRAME", "SVG", "VIDEO",
+    "ABBR", "AUDIO", "B", "BDO", "BR", "BUTTON", "CITE", "CODE", "DATA",
+    "DATALIST", "DFN", "EM", "EMBED", "I", "IMG", "INPUT", "KBD", "LABEL",
+    "MARK", "MATH", "METER", "NOSCRIPT", "OBJECT", "OUTPUT", "PROGRESS", "Q",
+    "RUBY", "SAMP", "SCRIPT", "SELECT", "SMALL", "SPAN", "STRONG", "SUB",
+    "SUP", "TEXTAREA", "TIME", "VAR", "WBR"
+  ],
+
+  // These are the classes that readability sets itself.
+  CLASSES_TO_PRESERVE: [ "page" ],
+
+  // These are the list of HTML entities that need to be escaped.
+  HTML_ESCAPE_MAP: {
+    "lt": "<",
+    "gt": ">",
+    "amp": "&",
+    "quot": '"',
+    "apos": "'",
+  },
+
+  /**
+   * Run any post-process modifications to article content as necessary.
+   *
+   * @param Element
+   * @return void
+  **/
+  _postProcessContent: function(articleContent) {
+    // Readability cannot open relative uris so we convert them to absolute uris.
+    this._fixRelativeUris(articleContent);
+
+    this._simplifyNestedElements(articleContent);
+
+    if (!this._keepClasses) {
+      // Remove classes.
+      this._cleanClasses(articleContent);
+    }
+  },
+
+  /**
+   * Iterates over a NodeList, calls `filterFn` for each node and removes node
+   * if function returned `true`.
+   *
+   * If function is not passed, removes all the nodes in node list.
+   *
+   * @param NodeList nodeList The nodes to operate on
+   * @param Function filterFn the function to use as a filter
+   * @return void
+   */
+  _removeNodes: function(nodeList, filterFn) {
+    // Avoid ever operating on live node lists.
+    if (this._docJSDOMParser && nodeList._isLiveNodeList) {
+      throw new Error("Do not pass live node lists to _removeNodes");
+    }
+    for (var i = nodeList.length - 1; i >= 0; i--) {
+      var node = nodeList[i];
+      var parentNode = node.parentNode;
+      if (parentNode) {
+        if (!filterFn || filterFn.call(this, node, i, nodeList)) {
+          parentNode.removeChild(node);
+        }
+      }
+    }
+  },
+
+  /**
+   * Iterates over a NodeList, and calls _setNodeTag for each node.
+   *
+   * @param NodeList nodeList The nodes to operate on
+   * @param String newTagName the new tag name to use
+   * @return void
+   */
+  _replaceNodeTags: function(nodeList, newTagName) {
+    // Avoid ever operating on live node lists.
+    if (this._docJSDOMParser && nodeList._isLiveNodeList) {
+      throw new Error("Do not pass live node lists to _replaceNodeTags");
+    }
+    for (const node of nodeList) {
+      this._setNodeTag(node, newTagName);
+    }
+  },
+
+  /**
+   * Iterate over a NodeList, which doesn't natively fully implement the Array
+   * interface.
+   *
+   * For convenience, the current object context is applied to the provided
+   * iterate function.
+   *
+   * @param  NodeList nodeList The NodeList.
+   * @param  Function fn       The iterate function.
+   * @return void
+   */
+  _forEachNode: function(nodeList, fn) {
+    Array.prototype.forEach.call(nodeList, fn, this);
+  },
+
+  /**
+   * Iterate over a NodeList, and return the first node that passes
+   * the supplied test function
+   *
+   * For convenience, the current object context is applied to the provided
+   * test function.
+   *
+   * @param  NodeList nodeList The NodeList.
+   * @param  Function fn       The test function.
+   * @return void
+   */
+  _findNode: function(nodeList, fn) {
+    return Array.prototype.find.call(nodeList, fn, this);
+  },
+
+  /**
+   * Iterate over a NodeList, return true if any of the provided iterate
+   * function calls returns true, false otherwise.
+   *
+   * For convenience, the current object context is applied to the
+   * provided iterate function.
+   *
+   * @param  NodeList nodeList The NodeList.
+   * @param  Function fn       The iterate function.
+   * @return Boolean
+   */
+  _someNode: function(nodeList, fn) {
+    return Array.prototype.some.call(nodeList, fn, this);
+  },
+
+  /**
+   * Iterate over a NodeList, return true if all of the provided iterate
+   * function calls return true, false otherwise.
+   *
+   * For convenience, the current object context is applied to the
+   * provided iterate function.
+   *
+   * @param  NodeList nodeList The NodeList.
+   * @param  Function fn       The iterate function.
+   * @return Boolean
+   */
+  _everyNode: function(nodeList, fn) {
+    return Array.prototype.every.call(nodeList, fn, this);
+  },
+
+  /**
+   * Concat all nodelists passed as arguments.
+   *
+   * @return ...NodeList
+   * @return Array
+   */
+  _concatNodeLists: function() {
+    var slice = Array.prototype.slice;
+    var args = slice.call(arguments);
+    var nodeLists = args.map(function(list) {
+      return slice.call(list);
+    });
+    return Array.prototype.concat.apply([], nodeLists);
+  },
+
+  _getAllNodesWithTag: function(node, tagNames) {
+    if (node.querySelectorAll) {
+      return node.querySelectorAll(tagNames.join(","));
+    }
+    return [].concat.apply([], tagNames.map(function(tag) {
+      var collection = node.getElementsByTagName(tag);
+      return Array.isArray(collection) ? collection : Array.from(collection);
+    }));
+  },
+
+  /**
+   * Removes the class="" attribute from every element in the given
+   * subtree, except those that match CLASSES_TO_PRESERVE and
+   * the classesToPreserve array from the options object.
+   *
+   * @param Element
+   * @return void
+   */
+  _cleanClasses: function(node) {
+    var classesToPreserve = this._classesToPreserve;
+    var className = (node.getAttribute("class") || "")
+      .split(/\s+/)
+      .filter(function(cls) {
+        return classesToPreserve.indexOf(cls) != -1;
+      })
+      .join(" ");
+
+    if (className) {
+      node.setAttribute("class", className);
+    } else {
+      node.removeAttribute("class");
+    }
+
+    for (node = node.firstElementChild; node; node = node.nextElementSibling) {
+      this._cleanClasses(node);
+    }
+  },
+
+  /**
+   * Converts each <a> and <img> uri in the given element to an absolute URI,
+   * ignoring #ref URIs.
+   *
+   * @param Element
+   * @return void
+   */
+  _fixRelativeUris: function(articleContent) {
+    var baseURI = this._doc.baseURI;
+    var documentURI = this._doc.documentURI;
+    function toAbsoluteURI(uri) {
+      // Leave hash links alone if the base URI matches the document URI:
+      if (baseURI == documentURI && uri.charAt(0) == "#") {
+        return uri;
+      }
+
+      // Otherwise, resolve against base URI:
+      try {
+        return new URL(uri, baseURI).href;
+      } catch (ex) {
+        // Something went wrong, just return the original:
+      }
+      return uri;
+    }
+
+    var links = this._getAllNodesWithTag(articleContent, ["a"]);
+    this._forEachNode(links, function(link) {
+      var href = link.getAttribute("href");
+      if (href) {
+        // Remove links with javascript: URIs, since
+        // they won't work after scripts have been removed from the page.
+        if (href.indexOf("javascript:") === 0) {
+          // if the link only contains simple text content, it can be converted to a text node
+          if (link.childNodes.length === 1 && link.childNodes[0].nodeType === this.TEXT_NODE) {
+            var text = this._doc.createTextNode(link.textContent);
+            link.parentNode.replaceChild(text, link);
+          } else {
+            // if the link has multiple children, they should all be preserved
+            var container = this._doc.createElement("span");
+            while (link.firstChild) {
+              container.appendChild(link.firstChild);
+            }
+            link.parentNode.replaceChild(container, link);
+          }
+        } else {
+          link.setAttribute("href", toAbsoluteURI(href));
+        }
+      }
+    });
+
+    var medias = this._getAllNodesWithTag(articleContent, [
+      "img", "picture", "figure", "video", "audio", "source"
+    ]);
+
+    this._forEachNode(medias, function(media) {
+      var src = media.getAttribute("src");
+      var poster = media.getAttribute("poster");
+      var srcset = media.getAttribute("srcset");
+
+      if (src) {
+        media.setAttribute("src", toAbsoluteURI(src));
+      }
+
+      if (poster) {
+        media.setAttribute("poster", toAbsoluteURI(poster));
+      }
+
+      if (srcset) {
+        var newSrcset = srcset.replace(this.REGEXPS.srcsetUrl, function(_, p1, p2, p3) {
+          return toAbsoluteURI(p1) + (p2 || "") + p3;
+        });
+
+        media.setAttribute("srcset", newSrcset);
+      }
+    });
+  },
+
+  _simplifyNestedElements: function(articleContent) {
+    var node = articleContent;
+
+    while (node) {
+      if (node.parentNode && ["DIV", "SECTION"].includes(node.tagName) && !(node.id && node.id.startsWith("readability"))) {
+        if (this._isElementWithoutContent(node)) {
+          node = this._removeAndGetNext(node);
+          continue;
+        } else if (this._hasSingleTagInsideElement(node, "DIV") || this._hasSingleTagInsideElement(node, "SECTION")) {
+          var child = node.children[0];
+          for (var i = 0; i < node.attributes.length; i++) {
+            child.setAttribute(node.attributes[i].name, node.attributes[i].value);
+          }
+          node.parentNode.replaceChild(child, node);
+          node = child;
+          continue;
+        }
+      }
+
+      node = this._getNextNode(node);
+    }
+  },
+
+  /**
+   * Get the article title as an H1.
+   *
+   * @return string
+   **/
+  _getArticleTitle: function() {
+    var doc = this._doc;
+    var curTitle = "";
+    var origTitle = "";
+
+    try {
+      curTitle = origTitle = doc.title.trim();
+
+      // If they had an element with id "title" in their HTML
+      if (typeof curTitle !== "string")
+        curTitle = origTitle = this._getInnerText(doc.getElementsByTagName("title")[0]);
+    } catch (e) {/* ignore exceptions setting the title. */}
+
+    var titleHadHierarchicalSeparators = false;
+    function wordCount(str) {
+      return str.split(/\s+/).length;
+    }
+
+    // If there's a separator in the title, first remove the final part
+    if ((/ [\|\-\\\/>»] /).test(curTitle)) {
+      titleHadHierarchicalSeparators = / [\\\/>»] /.test(curTitle);
+      curTitle = origTitle.replace(/(.*)[\|\-\\\/>»] .*/gi, "$1");
+
+      // If the resulting title is too short (3 words or fewer), remove
+      // the first part instead:
+      if (wordCount(curTitle) < 3)
+        curTitle = origTitle.replace(/[^\|\-\\\/>»]*[\|\-\\\/>»](.*)/gi, "$1");
+    } else if (curTitle.indexOf(": ") !== -1) {
+      // Check if we have an heading containing this exact string, so we
+      // could assume it's the full title.
+      var headings = this._concatNodeLists(
+        doc.getElementsByTagName("h1"),
+        doc.getElementsByTagName("h2")
+      );
+      var trimmedTitle = curTitle.trim();
+      var match = this._someNode(headings, function(heading) {
+        return heading.textContent.trim() === trimmedTitle;
+      });
+
+      // If we don't, let's extract the title out of the original title string.
+      if (!match) {
+        curTitle = origTitle.substring(origTitle.lastIndexOf(":") + 1);
+
+        // If the title is now too short, try the first colon instead:
+        if (wordCount(curTitle) < 3) {
+          curTitle = origTitle.substring(origTitle.indexOf(":") + 1);
+          // But if we have too many words before the colon there's something weird
+          // with the titles and the H tags so let's just use the original title instead
+        } else if (wordCount(origTitle.substr(0, origTitle.indexOf(":"))) > 5) {
+          curTitle = origTitle;
+        }
+      }
+    } else if (curTitle.length > 150 || curTitle.length < 15) {
+      var hOnes = doc.getElementsByTagName("h1");
+
+      if (hOnes.length === 1)
+        curTitle = this._getInnerText(hOnes[0]);
+    }
+
+    curTitle = curTitle.trim().replace(this.REGEXPS.normalize, " ");
+    // If we now have 4 words or fewer as our title, and either no
+    // 'hierarchical' separators (\, /, > or ») were found in the original
+    // title or we decreased the number of words by more than 1 word, use
+    // the original title.
+    var curTitleWordCount = wordCount(curTitle);
+    if (curTitleWordCount <= 4 &&
+        (!titleHadHierarchicalSeparators ||
+         curTitleWordCount != wordCount(origTitle.replace(/[\|\-\\\/>»]+/g, "")) - 1)) {
+      curTitle = origTitle;
+    }
+
+    return curTitle;
+  },
+
+  /**
+   * Prepare the HTML document for readability to scrape it.
+   * This includes things like stripping javascript, CSS, and handling terrible markup.
+   *
+   * @return void
+   **/
+  _prepDocument: function() {
+    var doc = this._doc;
+
+    // Remove all style tags in head
+    this._removeNodes(this._getAllNodesWithTag(doc, ["style"]));
+
+    if (doc.body) {
+      this._replaceBrs(doc.body);
+    }
+
+    this._replaceNodeTags(this._getAllNodesWithTag(doc, ["font"]), "SPAN");
+  },
+
+  /**
+   * Finds the next node, starting from the given node, and ignoring
+   * whitespace in between. If the given node is an element, the same node is
+   * returned.
+   */
+  _nextNode: function (node) {
+    var next = node;
+    while (next
+        && (next.nodeType != this.ELEMENT_NODE)
+        && this.REGEXPS.whitespace.test(next.textContent)) {
+      next = next.nextSibling;
+    }
+    return next;
+  },
+
+  /**
+   * Replaces 2 or more successive <br> elements with a single <p>.
+   * Whitespace between <br> elements are ignored. For example:
+   *   <div>foo<br>bar<br> <br><br>abc</div>
+   * will become:
+   *   <div>foo<br>bar<p>abc</p></div>
+   */
+  _replaceBrs: function (elem) {
+    this._forEachNode(this._getAllNodesWithTag(elem, ["br"]), function(br) {
+      var next = br.nextSibling;
+
+      // Whether 2 or more <br> elements have been found and replaced with a
+      // <p> block.
+      var replaced = false;
+
+      // If we find a <br> chain, remove the <br>s until we hit another node
+      // or non-whitespace. This leaves behind the first <br> in the chain
+      // (which will be replaced with a <p> later).
+      while ((next = this._nextNode(next)) && (next.tagName == "BR")) {
+        replaced = true;
+        var brSibling = next.nextSibling;
+        next.parentNode.removeChild(next);
+        next = brSibling;
+      }
+
+      // If we removed a <br> chain, replace the remaining <br> with a <p>. Add
+      // all sibling nodes as children of the <p> until we hit another <br>
+      // chain.
+      if (replaced) {
+        var p = this._doc.createElement("p");
+        br.parentNode.replaceChild(p, br);
+
+        next = p.nextSibling;
+        while (next) {
+          // If we've hit another <br><br>, we're done adding children to this <p>.
+          if (next.tagName == "BR") {
+            var nextElem = this._nextNode(next.nextSibling);
+            if (nextElem && nextElem.tagName == "BR")
+              break;
+          }
+
+          if (!this._isPhrasingContent(next))
+            break;
+
+          // Otherwise, make this node a child of the new <p>.
+          var sibling = next.nextSibling;
+          p.appendChild(next);
+          next = sibling;
+        }
+
+        while (p.lastChild && this._isWhitespace(p.lastChild)) {
+          p.removeChild(p.lastChild);
+        }
+
+        if (p.parentNode.tagName === "P")
+          this._setNodeTag(p.parentNode, "DIV");
+      }
+    });
+  },
+
+  _setNodeTag: function (node, tag) {
+    this.log("_setNodeTag", node, tag);
+    if (this._docJSDOMParser) {
+      node.localName = tag.toLowerCase();
+      node.tagName = tag.toUpperCase();
+      return node;
+    }
+
+    var replacement = node.ownerDocument.createElement(tag);
+    while (node.firstChild) {
+      replacement.appendChild(node.firstChild);
+    }
+    node.parentNode.replaceChild(replacement, node);
+    if (node.readability)
+      replacement.readability = node.readability;
+
+    for (var i = 0; i < node.attributes.length; i++) {
+      try {
+        replacement.setAttribute(node.attributes[i].name, node.attributes[i].value);
+      } catch (ex) {
+        /* it's possible for setAttribute() to throw if the attribute name
+         * isn't a valid XML Name. Such attributes can however be parsed from
+         * source in HTML docs, see https://github.com/whatwg/html/issues/4275,
+         * so we can hit them here and then throw. We don't care about such
+         * attributes so we ignore them.
+         */
+      }
+    }
+    return replacement;
+  },
+
+  /**
+   * Prepare the article node for display. Clean out any inline styles,
+   * iframes, forms, strip extraneous <p> tags, etc.
+   *
+   * @param Element
+   * @return void
+   **/
+  _prepArticle: function(articleContent) {
+    this._cleanStyles(articleContent);
+
+    // Check for data tables before we continue, to avoid removing items in
+    // those tables, which will often be isolated even though they're
+    // visually linked to other content-ful elements (text, images, etc.).
+    this._markDataTables(articleContent);
+
+    this._fixLazyImages(articleContent);
+
+    // Clean out junk from the article content
+    this._cleanConditionally(articleContent, "form");
+    this._cleanConditionally(articleContent, "fieldset");
+    this._clean(articleContent, "object");
+    this._clean(articleContent, "embed");
+    this._clean(articleContent, "footer");
+    this._clean(articleContent, "link");
+    this._clean(articleContent, "aside");
+
+    // Clean out elements with little content that have "share" in their id/class combinations from final top candidates,
+    // which means we don't remove the top candidates even they have "share".
+
+    var shareElementThreshold = this.DEFAULT_CHAR_THRESHOLD;
+
+    this._forEachNode(articleContent.children, function (topCandidate) {
+      this._cleanMatchedNodes(topCandidate, function (node, matchString) {
+        return this.REGEXPS.shareElements.test(matchString) && node.textContent.length < shareElementThreshold;
+      });
+    });
+
+    this._clean(articleContent, "iframe");
+    this._clean(articleContent, "input");
+    this._clean(articleContent, "textarea");
+    this._clean(articleContent, "select");
+    this._clean(articleContent, "button");
+    this._cleanHeaders(articleContent);
+
+    // Do these last as the previous stuff may have removed junk
+    // that will affect these
+    this._cleanConditionally(articleContent, "table");
+    this._cleanConditionally(articleContent, "ul");
+    this._cleanConditionally(articleContent, "div");
+
+    // replace H1 with H2 as H1 should be only title that is displayed separately
+    this._replaceNodeTags(this._getAllNodesWithTag(articleContent, ["h1"]), "h2");
+
+    // Remove extra paragraphs
+    this._removeNodes(this._getAllNodesWithTag(articleContent, ["p"]), function (paragraph) {
+      var imgCount = paragraph.getElementsByTagName("img").length;
+      var embedCount = paragraph.getElementsByTagName("embed").length;
+      var objectCount = paragraph.getElementsByTagName("object").length;
+      // At this point, nasty iframes have been removed, only remain embedded video ones.
+      var iframeCount = paragraph.getElementsByTagName("iframe").length;
+      var totalCount = imgCount + embedCount + objectCount + iframeCount;
+
+      return totalCount === 0 && !this._getInnerText(paragraph, false);
+    });
+
+    this._forEachNode(this._getAllNodesWithTag(articleContent, ["br"]), function(br) {
+      var next = this._nextNode(br.nextSibling);
+      if (next && next.tagName == "P")
+        br.parentNode.removeChild(br);
+    });
+
+    // Remove single-cell tables
+    this._forEachNode(this._getAllNodesWithTag(articleContent, ["table"]), function(table) {
+      var tbody = this._hasSingleTagInsideElement(table, "TBODY") ? table.firstElementChild : table;
+      if (this._hasSingleTagInsideElement(tbody, "TR")) {
+        var row = tbody.firstElementChild;
+        if (this._hasSingleTagInsideElement(row, "TD")) {
+          var cell = row.firstElementChild;
+          cell = this._setNodeTag(cell, this._everyNode(cell.childNodes, this._isPhrasingContent) ? "P" : "DIV");
+          table.parentNode.replaceChild(cell, table);
+        }
+      }
+    });
+  },
+
+  /**
+   * Initialize a node with the readability object. Also checks the
+   * className/id for special names to add to its score.
+   *
+   * @param Element
+   * @return void
+  **/
+  _initializeNode: function(node) {
+    node.readability = {"contentScore": 0};
+
+    switch (node.tagName) {
+      case "DIV":
+        node.readability.contentScore += 5;
+        break;
+
+      case "PRE":
+      case "TD":
+      case "BLOCKQUOTE":
+        node.readability.contentScore += 3;
+        break;
+
+      case "ADDRESS":
+      case "OL":
+      case "UL":
+      case "DL":
+      case "DD":
+      case "DT":
+      case "LI":
+      case "FORM":
+        node.readability.contentScore -= 3;
+        break;
+
+      case "H1":
+      case "H2":
+      case "H3":
+      case "H4":
+      case "H5":
+      case "H6":
+      case "TH":
+        node.readability.contentScore -= 5;
+        break;
+    }
+
+    node.readability.contentScore += this._getClassWeight(node);
+  },
+
+  _removeAndGetNext: function(node) {
+    var nextNode = this._getNextNode(node, true);
+    node.parentNode.removeChild(node);
+    return nextNode;
+  },
+
+  /**
+   * Traverse the DOM from node to node, starting at the node passed in.
+   * Pass true for the second parameter to indicate this node itself
+   * (and its kids) are going away, and we want the next node over.
+   *
+   * Calling this in a loop will traverse the DOM depth-first.
+   */
+  _getNextNode: function(node, ignoreSelfAndKids) {
+    // First check for kids if those aren't being ignored
+    if (!ignoreSelfAndKids && node.firstElementChild) {
+      return node.firstElementChild;
+    }
+    // Then for siblings...
+    if (node.nextElementSibling) {
+      return node.nextElementSibling;
+    }
+    // And finally, move up the parent chain *and* find a sibling
+    // (because this is depth-first traversal, we will have already
+    // seen the parent nodes themselves).
+    do {
+      node = node.parentNode;
+    } while (node && !node.nextElementSibling);
+    return node && node.nextElementSibling;
+  },
+
+  // compares second text to first one
+  // 1 = same text, 0 = completely different text
+  // works the way that it splits both texts into words and then finds words that are unique in second text
+  // the result is given by the lower length of unique parts
+  _textSimilarity: function(textA, textB) {
+    var tokensA = textA.toLowerCase().split(this.REGEXPS.tokenize).filter(Boolean);
+    var tokensB = textB.toLowerCase().split(this.REGEXPS.tokenize).filter(Boolean);
+    if (!tokensA.length || !tokensB.length) {
+      return 0;
+    }
+    var uniqTokensB = tokensB.filter(token => !tokensA.includes(token));
+    var distanceB = uniqTokensB.join(" ").length / tokensB.join(" ").length;
+    return 1 - distanceB;
+  },
+
+  _checkByline: function(node, matchString) {
+    if (this._articleByline) {
+      return false;
+    }
+
+    if (node.getAttribute !== undefined) {
+      var rel = node.getAttribute("rel");
+      var itemprop = node.getAttribute("itemprop");
+    }
+
+    if ((rel === "author" || (itemprop && itemprop.indexOf("author") !== -1) || this.REGEXPS.byline.test(matchString)) && this._isValidByline(node.textContent)) {
+      this._articleByline = node.textContent.trim();
+      return true;
+    }
+
+    return false;
+  },
+
+  _getNodeAncestors: function(node, maxDepth) {
+    maxDepth = maxDepth || 0;
+    var i = 0, ancestors = [];
+    while (node.parentNode) {
+      ancestors.push(node.parentNode);
+      if (maxDepth && ++i === maxDepth)
+        break;
+      node = node.parentNode;
+    }
+    return ancestors;
+  },
+
+  /***
+   * grabArticle - Using a variety of metrics (content score, classname, element types), find the content that is
+   *         most likely to be the stuff a user wants to read. Then return it wrapped up in a div.
+   *
+   * @param page a document to run upon. Needs to be a full document, complete with body.
+   * @return Element
+  **/
+  _grabArticle: function (page) {
+    this.log("**** grabArticle ****");
+    var doc = this._doc;
+    var isPaging = page !== null;
+    page = page ? page : this._doc.body;
+
+    // We can't grab an article if we don't have a page!
+    if (!page) {
+      this.log("No body found in document. Abort.");
+      return null;
+    }
+
+    var pageCacheHtml = page.innerHTML;
+
+    while (true) {
+      this.log("Starting grabArticle loop");
+      var stripUnlikelyCandidates = this._flagIsActive(this.FLAG_STRIP_UNLIKELYS);
+
+      // First, node prepping. Trash nodes that look cruddy (like ones with the
+      // class name "comment", etc), and turn divs into P tags where they have been
+      // used inappropriately (as in, where they contain no other block level elements.)
+      var elementsToScore = [];
+      var node = this._doc.documentElement;
+
+      let shouldRemoveTitleHeader = true;
+
+      while (node) {
+
+        if (node.tagName === "HTML") {
+          this._articleLang = node.getAttribute("lang");
+        }
+
+        var matchString = node.className + " " + node.id;
+
+        if (!this._isProbablyVisible(node)) {
+          this.log("Removing hidden node - " + matchString);
+          node = this._removeAndGetNext(node);
+          continue;
+        }
+
+        // Check to see if this node is a byline, and remove it if it is.
+        if (this._checkByline(node, matchString)) {
+          node = this._removeAndGetNext(node);
+          continue;
+        }
+
+        if (shouldRemoveTitleHeader && this._headerDuplicatesTitle(node)) {
+          this.log("Removing header: ", node.textContent.trim(), this._articleTitle.trim());
+          shouldRemoveTitleHeader = false;
+          node = this._removeAndGetNext(node);
+          continue;
+        }
+
+        // Remove unlikely candidates
+        if (stripUnlikelyCandidates) {
+          if (this.REGEXPS.unlikelyCandidates.test(matchString) &&
+              !this.REGEXPS.okMaybeItsACandidate.test(matchString) &&
+              !this._hasAncestorTag(node, "table") &&
+              !this._hasAncestorTag(node, "code") &&
+              node.tagName !== "BODY" &&
+              node.tagName !== "A") {
+            this.log("Removing unlikely candidate - " + matchString);
+            node = this._removeAndGetNext(node);
+            continue;
+          }
+
+          if (this.UNLIKELY_ROLES.includes(node.getAttribute("role"))) {
+            this.log("Removing content with role " + node.getAttribute("role") + " - " + matchString);
+            node = this._removeAndGetNext(node);
+            continue;
+          }
+        }
+
+        // Remove DIV, SECTION, and HEADER nodes without any content(e.g. text, image, video, or iframe).
+        if ((node.tagName === "DIV" || node.tagName === "SECTION" || node.tagName === "HEADER" ||
+             node.tagName === "H1" || node.tagName === "H2" || node.tagName === "H3" ||
+             node.tagName === "H4" || node.tagName === "H5" || node.tagName === "H6") &&
+            this._isElementWithoutContent(node)) {
+          node = this._removeAndGetNext(node);
+          continue;
+        }
+
+        if (this.DEFAULT_TAGS_TO_SCORE.indexOf(node.tagName) !== -1) {
+          elementsToScore.push(node);
+        }
+
+        // Turn all divs that don't have children block level elements into p's
+        if (node.tagName === "DIV") {
+          // Put phrasing content into paragraphs.
+          var p = null;
+          var childNode = node.firstChild;
+          while (childNode) {
+            var nextSibling = childNode.nextSibling;
+            if (this._isPhrasingContent(childNode)) {
+              if (p !== null) {
+                p.appendChild(childNode);
+              } else if (!this._isWhitespace(childNode)) {
+                p = doc.createElement("p");
+                node.replaceChild(p, childNode);
+                p.appendChild(childNode);
+              }
+            } else if (p !== null) {
+              while (p.lastChild && this._isWhitespace(p.lastChild)) {
+                p.removeChild(p.lastChild);
+              }
+              p = null;
+            }
+            childNode = nextSibling;
+          }
+
+          // Sites like http://mobile.slate.com encloses each paragraph with a DIV
+          // element. DIVs with only a P element inside and no text content can be
+          // safely converted into plain P elements to avoid confusing the scoring
+          // algorithm with DIVs with are, in practice, paragraphs.
+          if (this._hasSingleTagInsideElement(node, "P") && this._getLinkDensity(node) < 0.25) {
+            var newNode = node.children[0];
+            node.parentNode.replaceChild(newNode, node);
+            node = newNode;
+            elementsToScore.push(node);
+          } else if (!this._hasChildBlockElement(node)) {
+            node = this._setNodeTag(node, "P");
+            elementsToScore.push(node);
+          }
+        }
+        node = this._getNextNode(node);
+      }
+
+      /**
+       * Loop through all paragraphs, and assign a score to them based on how content-y they look.
+       * Then add their score to their parent node.
+       *
+       * A score is determined by things like number of commas, class names, etc. Maybe eventually link density.
+      **/
+      var candidates = [];
+      this._forEachNode(elementsToScore, function(elementToScore) {
+        if (!elementToScore.parentNode || typeof(elementToScore.parentNode.tagName) === "undefined")
+          return;
+
+        // If this paragraph is less than 25 characters, don't even count it.
+        var innerText = this._getInnerText(elementToScore);
+        if (innerText.length < 25)
+          return;
+
+        // Exclude nodes with no ancestor.
+        var ancestors = this._getNodeAncestors(elementToScore, 5);
+        if (ancestors.length === 0)
+          return;
+
+        var contentScore = 0;
+
+        // Add a point for the paragraph itself as a base.
+        contentScore += 1;
+
+        // Add points for any commas within this paragraph.
+        contentScore += innerText.split(",").length;
+
+        // For every 100 characters in this paragraph, add another point. Up to 3 points.
+        contentScore += Math.min(Math.floor(innerText.length / 100), 3);
+
+        // Initialize and score ancestors.
+        this._forEachNode(ancestors, function(ancestor, level) {
+          if (!ancestor.tagName || !ancestor.parentNode || typeof(ancestor.parentNode.tagName) === "undefined")
+            return;
+
+          if (typeof(ancestor.readability) === "undefined") {
+            this._initializeNode(ancestor);
+            candidates.push(ancestor);
+          }
+
+          // Node score divider:
+          // - parent:             1 (no division)
+          // - grandparent:        2
+          // - great grandparent+: ancestor level * 3
+          if (level === 0)
+            var scoreDivider = 1;
+          else if (level === 1)
+            scoreDivider = 2;
+          else
+            scoreDivider = level * 3;
+          ancestor.readability.contentScore += contentScore / scoreDivider;
+        });
+      });
+
+      // After we've calculated scores, loop through all of the possible
+      // candidate nodes we found and find the one with the highest score.
+      var topCandidates = [];
+      for (var c = 0, cl = candidates.length; c < cl; c += 1) {
+        var candidate = candidates[c];
+
+        // Scale the final candidates score based on link density. Good content
+        // should have a relatively small link density (5% or less) and be mostly
+        // unaffected by this operation.
+        var candidateScore = candidate.readability.contentScore * (1 - this._getLinkDensity(candidate));
+        candidate.readability.contentScore = candidateScore;
+
+        this.log("Candidate:", candidate, "with score " + candidateScore);
+
+        for (var t = 0; t < this._nbTopCandidates; t++) {
+          var aTopCandidate = topCandidates[t];
+
+          if (!aTopCandidate || candidateScore > aTopCandidate.readability.contentScore) {
+            topCandidates.splice(t, 0, candidate);
+            if (topCandidates.length > this._nbTopCandidates)
+              topCandidates.pop();
+            break;
+          }
+        }
+      }
+
+      var topCandidate = topCandidates[0] || null;
+      var neededToCreateTopCandidate = false;
+      var parentOfTopCandidate;
+
+      // If we still have no top candidate, just use the body as a last resort.
+      // We also have to copy the body node so it is something we can modify.
+      if (topCandidate === null || topCandidate.tagName === "BODY") {
+        // Move all of the page's children into topCandidate
+        topCandidate = doc.createElement("DIV");
+        neededToCreateTopCandidate = true;
+        // Move everything (not just elements, also text nodes etc.) into the container
+        // so we even include text directly in the body:
+        while (page.firstChild) {
+          this.log("Moving child out:", page.firstChild);
+          topCandidate.appendChild(page.firstChild);
+        }
+
+        page.appendChild(topCandidate);
+
+        this._initializeNode(topCandidate);
+      } else if (topCandidate) {
+        // Find a better top candidate node if it contains (at least three) nodes which belong to `topCandidates` array
+        // and whose scores are quite closed with current `topCandidate` node.
+        var alternativeCandidateAncestors = [];
+        for (var i = 1; i < topCandidates.length; i++) {
+          if (topCandidates[i].readability.contentScore / topCandidate.readability.contentScore >= 0.75) {
+            alternativeCandidateAncestors.push(this._getNodeAncestors(topCandidates[i]));
+          }
+        }
+        var MINIMUM_TOPCANDIDATES = 3;
+        if (alternativeCandidateAncestors.length >= MINIMUM_TOPCANDIDATES) {
+          parentOfTopCandidate = topCandidate.parentNode;
+          while (parentOfTopCandidate.tagName !== "BODY") {
+            var listsContainingThisAncestor = 0;
+            for (var ancestorIndex = 0; ancestorIndex < alternativeCandidateAncestors.length && listsContainingThisAncestor < MINIMUM_TOPCANDIDATES; ancestorIndex++) {
+              listsContainingThisAncestor += Number(alternativeCandidateAncestors[ancestorIndex].includes(parentOfTopCandidate));
+            }
+            if (listsContainingThisAncestor >= MINIMUM_TOPCANDIDATES) {
+              topCandidate = parentOfTopCandidate;
+              break;
+            }
+            parentOfTopCandidate = parentOfTopCandidate.parentNode;
+          }
+        }
+        if (!topCandidate.readability) {
+          this._initializeNode(topCandidate);
+        }
+
+        // Because of our bonus system, parents of candidates might have scores
+        // themselves. They get half of the node. There won't be nodes with higher
+        // scores than our topCandidate, but if we see the score going *up* in the first
+        // few steps up the tree, that's a decent sign that there might be more content
+        // lurking in other places that we want to unify in. The sibling stuff
+        // below does some of that - but only if we've looked high enough up the DOM
+        // tree.
+        parentOfTopCandidate = topCandidate.parentNode;
+        var lastScore = topCandidate.readability.contentScore;
+        // The scores shouldn't get too low.
+        var scoreThreshold = lastScore / 3;
+        while (parentOfTopCandidate.tagName !== "BODY") {
+          if (!parentOfTopCandidate.readability) {
+            parentOfTopCandidate = parentOfTopCandidate.parentNode;
+            continue;
+          }
+          var parentScore = parentOfTopCandidate.readability.contentScore;
+          if (parentScore < scoreThreshold)
+            break;
+          if (parentScore > lastScore) {
+            // Alright! We found a better parent to use.
+            topCandidate = parentOfTopCandidate;
+            break;
+          }
+          lastScore = parentOfTopCandidate.readability.contentScore;
+          parentOfTopCandidate = parentOfTopCandidate.parentNode;
+        }
+
+        // If the top candidate is the only child, use parent instead. This will help sibling
+        // joining logic when adjacent content is actually located in parent's sibling node.
+        parentOfTopCandidate = topCandidate.parentNode;
+        while (parentOfTopCandidate.tagName != "BODY" && parentOfTopCandidate.children.length == 1) {
+          topCandidate = parentOfTopCandidate;
+          parentOfTopCandidate = topCandidate.parentNode;
+        }
+        if (!topCandidate.readability) {
+          this._initializeNode(topCandidate);
+        }
+      }
+
+      // Now that we have the top candidate, look through its siblings for content
+      // that might also be related. Things like preambles, content split by ads
+      // that we removed, etc.
+      var articleContent = doc.createElement("DIV");
+      if (isPaging)
+        articleContent.id = "readability-content";
+
+      var siblingScoreThreshold = Math.max(10, topCandidate.readability.contentScore * 0.2);
+      // Keep potential top candidate's parent node to try to get text direction of it later.
+      parentOfTopCandidate = topCandidate.parentNode;
+      var siblings = parentOfTopCandidate.children;
+
+      for (var s = 0, sl = siblings.length; s < sl; s++) {
+        var sibling = siblings[s];
+        var append = false;
+
+        this.log("Looking at sibling node:", sibling, sibling.readability ? ("with score " + sibling.readability.contentScore) : "");
+        this.log("Sibling has score", sibling.readability ? sibling.readability.contentScore : "Unknown");
+
+        if (sibling === topCandidate) {
+          append = true;
+        } else {
+          var contentBonus = 0;
+
+          // Give a bonus if sibling nodes and top candidates have the example same classname
+          if (sibling.className === topCandidate.className && topCandidate.className !== "")
+            contentBonus += topCandidate.readability.contentScore * 0.2;
+
+          if (sibling.readability &&
+              ((sibling.readability.contentScore + contentBonus) >= siblingScoreThreshold)) {
+            append = true;
+          } else if (sibling.nodeName === "P") {
+            var linkDensity = this._getLinkDensity(sibling);
+            var nodeContent = this._getInnerText(sibling);
+            var nodeLength = nodeContent.length;
+
+            if (nodeLength > 80 && linkDensity < 0.25) {
+              append = true;
+            } else if (nodeLength < 80 && nodeLength > 0 && linkDensity === 0 &&
+                       nodeContent.search(/\.( |$)/) !== -1) {
+              append = true;
+            }
+          }
+        }
+
+        if (append) {
+          this.log("Appending node:", sibling);
+
+          if (this.ALTER_TO_DIV_EXCEPTIONS.indexOf(sibling.nodeName) === -1) {
+            // We have a node that isn't a common block level element, like a form or td tag.
+            // Turn it into a div so it doesn't get filtered out later by accident.
+            this.log("Altering sibling:", sibling, "to div.");
+
+            sibling = this._setNodeTag(sibling, "DIV");
+          }
+
+          articleContent.appendChild(sibling);
+          // Fetch children again to make it compatible
+          // with DOM parsers without live collection support.
+          siblings = parentOfTopCandidate.children;
+          // siblings is a reference to the children array, and
+          // sibling is removed from the array when we call appendChild().
+          // As a result, we must revisit this index since the nodes
+          // have been shifted.
+          s -= 1;
+          sl -= 1;
+        }
+      }
+
+      if (this._debug)
+        this.log("Article content pre-prep: " + articleContent.innerHTML);
+      // So we have all of the content that we need. Now we clean it up for presentation.
+      this._prepArticle(articleContent);
+      if (this._debug)
+        this.log("Article content post-prep: " + articleContent.innerHTML);
+
+      if (neededToCreateTopCandidate) {
+        // We already created a fake div thing, and there wouldn't have been any siblings left
+        // for the previous loop, so there's no point trying to create a new div, and then
+        // move all the children over. Just assign IDs and class names here. No need to append
+        // because that already happened anyway.
+        topCandidate.id = "readability-page-1";
+        topCandidate.className = "page";
+      } else {
+        var div = doc.createElement("DIV");
+        div.id = "readability-page-1";
+        div.className = "page";
+        while (articleContent.firstChild) {
+          div.appendChild(articleContent.firstChild);
+        }
+        articleContent.appendChild(div);
+      }
+
+      if (this._debug)
+        this.log("Article content after paging: " + articleContent.innerHTML);
+
+      var parseSuccessful = true;
+
+      // Now that we've gone through the full algorithm, check to see if
+      // we got any meaningful content. If we didn't, we may need to re-run
+      // grabArticle with different flags set. This gives us a higher likelihood of
+      // finding the content, and the sieve approach gives us a higher likelihood of
+      // finding the -right- content.
+      var textLength = this._getInnerText(articleContent, true).length;
+      if (textLength < this._charThreshold) {
+        parseSuccessful = false;
+        page.innerHTML = pageCacheHtml;
+
+        if (this._flagIsActive(this.FLAG_STRIP_UNLIKELYS)) {
+          this._removeFlag(this.FLAG_STRIP_UNLIKELYS);
+          this._attempts.push({articleContent: articleContent, textLength: textLength});
+        } else if (this._flagIsActive(this.FLAG_WEIGHT_CLASSES)) {
+          this._removeFlag(this.FLAG_WEIGHT_CLASSES);
+          this._attempts.push({articleContent: articleContent, textLength: textLength});
+        } else if (this._flagIsActive(this.FLAG_CLEAN_CONDITIONALLY)) {
+          this._removeFlag(this.FLAG_CLEAN_CONDITIONALLY);
+          this._attempts.push({articleContent: articleContent, textLength: textLength});
+        } else {
+          this._attempts.push({articleContent: articleContent, textLength: textLength});
+          // No luck after removing flags, just return the longest text we found during the different loops
+          this._attempts.sort(function (a, b) {
+            return b.textLength - a.textLength;
+          });
+
+          // But first check if we actually have something
+          if (!this._attempts[0].textLength) {
+            return null;
+          }
+
+          articleContent = this._attempts[0].articleContent;
+          parseSuccessful = true;
+        }
+      }
+
+      if (parseSuccessful) {
+        // Find out text direction from ancestors of final top candidate.
+        var ancestors = [parentOfTopCandidate, topCandidate].concat(this._getNodeAncestors(parentOfTopCandidate));
+        this._someNode(ancestors, function(ancestor) {
+          if (!ancestor.tagName)
+            return false;
+          var articleDir = ancestor.getAttribute("dir");
+          if (articleDir) {
+            this._articleDir = articleDir;
+            return true;
+          }
+          return false;
+        });
+        return articleContent;
+      }
+    }
+  },
+
+  /**
+   * Check whether the input string could be a byline.
+   * This verifies that the input is a string, and that the length
+   * is less than 100 chars.
+   *
+   * @param possibleByline {string} - a string to check whether its a byline.
+   * @return Boolean - whether the input string is a byline.
+   */
+  _isValidByline: function(byline) {
+    if (typeof byline == "string" || byline instanceof String) {
+      byline = byline.trim();
+      return (byline.length > 0) && (byline.length < 100);
+    }
+    return false;
+  },
+
+  /**
+   * Converts some of the common HTML entities in string to their corresponding characters.
+   *
+   * @param str {string} - a string to unescape.
+   * @return string without HTML entity.
+   */
+  _unescapeHtmlEntities: function(str) {
+    if (!str) {
+      return str;
+    }
+
+    var htmlEscapeMap = this.HTML_ESCAPE_MAP;
+    return str.replace(/&(quot|amp|apos|lt|gt);/g, function(_, tag) {
+      return htmlEscapeMap[tag];
+    }).replace(/&#(?:x([0-9a-z]{1,4})|([0-9]{1,4}));/gi, function(_, hex, numStr) {
+      var num = parseInt(hex || numStr, hex ? 16 : 10);
+      return String.fromCharCode(num);
+    });
+  },
+
+  /**
+   * Try to extract metadata from JSON-LD object.
+   * For now, only Schema.org objects of type Article or its subtypes are supported.
+   * @return Object with any metadata that could be extracted (possibly none)
+   */
+  _getJSONLD: function (doc) {
+    var scripts = this._getAllNodesWithTag(doc, ["script"]);
+
+    var metadata;
+
+    this._forEachNode(scripts, function(jsonLdElement) {
+      if (!metadata && jsonLdElement.getAttribute("type") === "application/ld+json") {
+        try {
+          // Strip CDATA markers if present
+          var content = jsonLdElement.textContent.replace(/^\s*<!\[CDATA\[|\]\]>\s*$/g, "");
+          var parsed = JSON.parse(content);
+          if (
+            !parsed["@context"] ||
+            !parsed["@context"].match(/^https?\:\/\/schema\.org$/)
+          ) {
+            return;
+          }
+
+          if (!parsed["@type"] && Array.isArray(parsed["@graph"])) {
+            parsed = parsed["@graph"].find(function(it) {
+              return (it["@type"] || "").match(
+                this.REGEXPS.jsonLdArticleTypes
+              );
+            });
+          }
+
+          if (
+            !parsed ||
+            !parsed["@type"] ||
+            !parsed["@type"].match(this.REGEXPS.jsonLdArticleTypes)
+          ) {
+            return;
+          }
+
+          metadata = {};
+
+          if (typeof parsed.name === "string" && typeof parsed.headline === "string" && parsed.name !== parsed.headline) {
+            // we have both name and headline element in the JSON-LD. They should both be the same but some websites like aktualne.cz
+            // put their own name into "name" and the article title to "headline" which confuses Readability. So we try to check if either
+            // "name" or "headline" closely matches the html title, and if so, use that one. If not, then we use "name" by default.
+
+            var title = this._getArticleTitle();
+            var nameMatches = this._textSimilarity(parsed.name, title) > 0.75;
+            var headlineMatches = this._textSimilarity(parsed.headline, title) > 0.75;
+
+            if (headlineMatches && !nameMatches) {
+              metadata.title = parsed.headline;
+            } else {
+              metadata.title = parsed.name;
+            }
+          } else if (typeof parsed.name === "string") {
+            metadata.title = parsed.name.trim();
+          } else if (typeof parsed.headline === "string") {
+            metadata.title = parsed.headline.trim();
+          }
+          if (parsed.author) {
+            if (typeof parsed.author.name === "string") {
+              metadata.byline = parsed.author.name.trim();
+            } else if (Array.isArray(parsed.author) && parsed.author[0] && typeof parsed.author[0].name === "string") {
+              metadata.byline = parsed.author
+                .filter(function(author) {
+                  return author && typeof author.name === "string";
+                })
+                .map(function(author) {
+                  return author.name.trim();
+                })
+                .join(", ");
+            }
+          }
+          if (typeof parsed.description === "string") {
+            metadata.excerpt = parsed.description.trim();
+          }
+          if (
+            parsed.publisher &&
+            typeof parsed.publisher.name === "string"
+          ) {
+            metadata.siteName = parsed.publisher.name.trim();
+          }
+          return;
+        } catch (err) {
+          this.log(err.message);
+        }
+      }
+    });
+    return metadata ? metadata : {};
+  },
+
+  /**
+   * Attempts to get excerpt and byline metadata for the article.
+   *
+   * @param {Object} jsonld — object containing any metadata that
+   * could be extracted from JSON-LD object.
+   *
+   * @return Object with optional "excerpt" and "byline" properties
+   */
+  _getArticleMetadata: function(jsonld) {
+    var metadata = {};
+    var values = {};
+    var metaElements = this._doc.getElementsByTagName("meta");
+
+    // property is a space-separated list of values
+    var propertyPattern = /\s*(dc|dcterm|og|twitter)\s*:\s*(author|creator|description|title|site_name)\s*/gi;
+
+    // name is a single value
+    var namePattern = /^\s*(?:(dc|dcterm|og|twitter|weibo:(article|webpage))\s*[\.:]\s*)?(author|creator|description|title|site_name)\s*$/i;
+
+    // Find description tags.
+    this._forEachNode(metaElements, function(element) {
+      var elementName = element.getAttribute("name");
+      var elementProperty = element.getAttribute("property");
+      var content = element.getAttribute("content");
+      if (!content) {
+        return;
+      }
+      var matches = null;
+      var name = null;
+
+      if (elementProperty) {
+        matches = elementProperty.match(propertyPattern);
+        if (matches) {
+          // Convert to lowercase, and remove any whitespace
+          // so we can match below.
+          name = matches[0].toLowerCase().replace(/\s/g, "");
+          // multiple authors
+          values[name] = content.trim();
+        }
+      }
+      if (!matches && elementName && namePattern.test(elementName)) {
+        name = elementName;
+        if (content) {
+          // Convert to lowercase, remove any whitespace, and convert dots
+          // to colons so we can match below.
+          name = name.toLowerCase().replace(/\s/g, "").replace(/\./g, ":");
+          values[name] = content.trim();
+        }
+      }
+    });
+
+    // get title
+    metadata.title = jsonld.title ||
+                     values["dc:title"] ||
+                     values["dcterm:title"] ||
+                     values["og:title"] ||
+                     values["weibo:article:title"] ||
+                     values["weibo:webpage:title"] ||
+                     values["title"] ||
+                     values["twitter:title"];
+
+    if (!metadata.title) {
+      metadata.title = this._getArticleTitle();
+    }
+
+    // get author
+    metadata.byline = jsonld.byline ||
+                      values["dc:creator"] ||
+                      values["dcterm:creator"] ||
+                      values["author"];
+
+    // get description
+    metadata.excerpt = jsonld.excerpt ||
+                       values["dc:description"] ||
+                       values["dcterm:description"] ||
+                       values["og:description"] ||
+                       values["weibo:article:description"] ||
+                       values["weibo:webpage:description"] ||
+                       values["description"] ||
+                       values["twitter:description"];
+
+    // get site name
+    metadata.siteName = jsonld.siteName ||
+                        values["og:site_name"];
+
+    // in many sites the meta value is escaped with HTML entities,
+    // so here we need to unescape it
+    metadata.title = this._unescapeHtmlEntities(metadata.title);
+    metadata.byline = this._unescapeHtmlEntities(metadata.byline);
+    metadata.excerpt = this._unescapeHtmlEntities(metadata.excerpt);
+    metadata.siteName = this._unescapeHtmlEntities(metadata.siteName);
+
+    return metadata;
+  },
+
+  /**
+   * Check if node is image, or if node contains exactly only one image
+   * whether as a direct child or as its descendants.
+   *
+   * @param Element
+  **/
+  _isSingleImage: function(node) {
+    if (node.tagName === "IMG") {
+      return true;
+    }
+
+    if (node.children.length !== 1 || node.textContent.trim() !== "") {
+      return false;
+    }
+
+    return this._isSingleImage(node.children[0]);
+  },
+
+  /**
+   * Find all <noscript> that are located after <img> nodes, and which contain only one
+   * <img> element. Replace the first image with the image from inside the <noscript> tag,
+   * and remove the <noscript> tag. This improves the quality of the images we use on
+   * some sites (e.g. Medium).
+   *
+   * @param Element
+  **/
+  _unwrapNoscriptImages: function(doc) {
+    // Find img without source or attributes that might contains image, and remove it.
+    // This is done to prevent a placeholder img is replaced by img from noscript in next step.
+    var imgs = Array.from(doc.getElementsByTagName("img"));
+    this._forEachNode(imgs, function(img) {
+      for (var i = 0; i < img.attributes.length; i++) {
+        var attr = img.attributes[i];
+        switch (attr.name) {
+          case "src":
+          case "srcset":
+          case "data-src":
+          case "data-srcset":
+            return;
+        }
+
+        if (/\.(jpg|jpeg|png|webp)/i.test(attr.value)) {
+          return;
+        }
+      }
+
+      img.parentNode.removeChild(img);
+    });
+
+    // Next find noscript and try to extract its image
+    var noscripts = Array.from(doc.getElementsByTagName("noscript"));
+    this._forEachNode(noscripts, function(noscript) {
+      // Parse content of noscript and make sure it only contains image
+      var tmp = doc.createElement("div");
+      tmp.innerHTML = noscript.innerHTML;
+      if (!this._isSingleImage(tmp)) {
+        return;
+      }
+
+      // If noscript has previous sibling and it only contains image,
+      // replace it with noscript content. However we also keep old
+      // attributes that might contains image.
+      var prevElement = noscript.previousElementSibling;
+      if (prevElement && this._isSingleImage(prevElement)) {
+        var prevImg = prevElement;
+        if (prevImg.tagName !== "IMG") {
+          prevImg = prevElement.getElementsByTagName("img")[0];
+        }
+
+        var newImg = tmp.getElementsByTagName("img")[0];
+        for (var i = 0; i < prevImg.attributes.length; i++) {
+          var attr = prevImg.attributes[i];
+          if (attr.value === "") {
+            continue;
+          }
+
+          if (attr.name === "src" || attr.name === "srcset" || /\.(jpg|jpeg|png|webp)/i.test(attr.value)) {
+            if (newImg.getAttribute(attr.name) === attr.value) {
+              continue;
+            }
+
+            var attrName = attr.name;
+            if (newImg.hasAttribute(attrName)) {
+              attrName = "data-old-" + attrName;
+            }
+
+            newImg.setAttribute(attrName, attr.value);
+          }
+        }
+
+        noscript.parentNode.replaceChild(tmp.firstElementChild, prevElement);
+      }
+    });
+  },
+
+  /**
+   * Removes script tags from the document.
+   *
+   * @param Element
+  **/
+  _removeScripts: function(doc) {
+    this._removeNodes(this._getAllNodesWithTag(doc, ["script"]), function(scriptNode) {
+      scriptNode.nodeValue = "";
+      scriptNode.removeAttribute("src");
+      return true;
+    });
+    this._removeNodes(this._getAllNodesWithTag(doc, ["noscript"]));
+  },
+
+  /**
+   * Check if this node has only whitespace and a single element with given tag
+   * Returns false if the DIV node contains non-empty text nodes
+   * or if it contains no element with given tag or more than 1 element.
+   *
+   * @param Element
+   * @param string tag of child element
+  **/
+  _hasSingleTagInsideElement: function(element, tag) {
+    // There should be exactly 1 element child with given tag
+    if (element.children.length != 1 || element.children[0].tagName !== tag) {
+      return false;
+    }
+
+    // And there should be no text nodes with real content
+    return !this._someNode(element.childNodes, function(node) {
+      return node.nodeType === this.TEXT_NODE &&
+             this.REGEXPS.hasContent.test(node.textContent);
+    });
+  },
+
+  _isElementWithoutContent: function(node) {
+    return node.nodeType === this.ELEMENT_NODE &&
+      node.textContent.trim().length == 0 &&
+      (node.children.length == 0 ||
+       node.children.length == node.getElementsByTagName("br").length + node.getElementsByTagName("hr").length);
+  },
+
+  /**
+   * Determine whether element has any children block level elements.
+   *
+   * @param Element
+   */
+  _hasChildBlockElement: function (element) {
+    return this._someNode(element.childNodes, function(node) {
+      return this.DIV_TO_P_ELEMS.has(node.tagName) ||
+             this._hasChildBlockElement(node);
+    });
+  },
+
+  /***
+   * Determine if a node qualifies as phrasing content.
+   * https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Content_categories#Phrasing_content
+  **/
+  _isPhrasingContent: function(node) {
+    return node.nodeType === this.TEXT_NODE || this.PHRASING_ELEMS.indexOf(node.tagName) !== -1 ||
+      ((node.tagName === "A" || node.tagName === "DEL" || node.tagName === "INS") &&
+        this._everyNode(node.childNodes, this._isPhrasingContent));
+  },
+
+  _isWhitespace: function(node) {
+    return (node.nodeType === this.TEXT_NODE && node.textContent.trim().length === 0) ||
+           (node.nodeType === this.ELEMENT_NODE && node.tagName === "BR");
+  },
+
+  /**
+   * Get the inner text of a node - cross browser compatibly.
+   * This also strips out any excess whitespace to be found.
+   *
+   * @param Element
+   * @param Boolean normalizeSpaces (default: true)
+   * @return string
+  **/
+  _getInnerText: function(e, normalizeSpaces) {
+    normalizeSpaces = (typeof normalizeSpaces === "undefined") ? true : normalizeSpaces;
+    var textContent = e.textContent.trim();
+
+    if (normalizeSpaces) {
+      return textContent.replace(this.REGEXPS.normalize, " ");
+    }
+    return textContent;
+  },
+
+  /**
+   * Get the number of times a string s appears in the node e.
+   *
+   * @param Element
+   * @param string - what to split on. Default is ","
+   * @return number (integer)
+  **/
+  _getCharCount: function(e, s) {
+    s = s || ",";
+    return this._getInnerText(e).split(s).length - 1;
+  },
+
+  /**
+   * Remove the style attribute on every e and under.
+   * TODO: Test if getElementsByTagName(*) is faster.
+   *
+   * @param Element
+   * @return void
+  **/
+  _cleanStyles: function(e) {
+    if (!e || e.tagName.toLowerCase() === "svg")
+      return;
+
+    // Remove `style` and deprecated presentational attributes
+    for (var i = 0; i < this.PRESENTATIONAL_ATTRIBUTES.length; i++) {
+      e.removeAttribute(this.PRESENTATIONAL_ATTRIBUTES[i]);
+    }
+
+    if (this.DEPRECATED_SIZE_ATTRIBUTE_ELEMS.indexOf(e.tagName) !== -1) {
+      e.removeAttribute("width");
+      e.removeAttribute("height");
+    }
+
+    var cur = e.firstElementChild;
+    while (cur !== null) {
+      this._cleanStyles(cur);
+      cur = cur.nextElementSibling;
+    }
+  },
+
+  /**
+   * Get the density of links as a percentage of the content
+   * This is the amount of text that is inside a link divided by the total text in the node.
+   *
+   * @param Element
+   * @return number (float)
+  **/
+  _getLinkDensity: function(element) {
+    var textLength = this._getInnerText(element).length;
+    if (textLength === 0)
+      return 0;
+
+    var linkLength = 0;
+
+    // XXX implement _reduceNodeList?
+    this._forEachNode(element.getElementsByTagName("a"), function(linkNode) {
+      var href = linkNode.getAttribute("href");
+      var coefficient = href && this.REGEXPS.hashUrl.test(href) ? 0.3 : 1;
+      linkLength += this._getInnerText(linkNode).length * coefficient;
+    });
+
+    return linkLength / textLength;
+  },
+
+  /**
+   * Get an elements class/id weight. Uses regular expressions to tell if this
+   * element looks good or bad.
+   *
+   * @param Element
+   * @return number (Integer)
+  **/
+  _getClassWeight: function(e) {
+    if (!this._flagIsActive(this.FLAG_WEIGHT_CLASSES))
+      return 0;
+
+    var weight = 0;
+
+    // Look for a special classname
+    if (typeof(e.className) === "string" && e.className !== "") {
+      if (this.REGEXPS.negative.test(e.className))
+        weight -= 25;
+
+      if (this.REGEXPS.positive.test(e.className))
+        weight += 25;
+    }
+
+    // Look for a special ID
+    if (typeof(e.id) === "string" && e.id !== "") {
+      if (this.REGEXPS.negative.test(e.id))
+        weight -= 25;
+
+      if (this.REGEXPS.positive.test(e.id))
+        weight += 25;
+    }
+
+    return weight;
+  },
+
+  /**
+   * Clean a node of all elements of type "tag".
+   * (Unless it's a youtube/vimeo video. People love movies.)
+   *
+   * @param Element
+   * @param string tag to clean
+   * @return void
+   **/
+  _clean: function(e, tag) {
+    var isEmbed = ["object", "embed", "iframe"].indexOf(tag) !== -1;
+
+    this._removeNodes(this._getAllNodesWithTag(e, [tag]), function(element) {
+      // Allow youtube and vimeo videos through as people usually want to see those.
+      if (isEmbed) {
+        // First, check the elements attributes to see if any of them contain youtube or vimeo
+        for (var i = 0; i < element.attributes.length; i++) {
+          if (this.REGEXPS.videos.test(element.attributes[i].value)) {
+            return false;
+          }
+        }
+
+        // For embed with <object> tag, check inner HTML as well.
+        if (element.tagName === "object" && this.REGEXPS.videos.test(element.innerHTML)) {
+          return false;
+        }
+      }
+
+      return true;
+    });
+  },
+
+  /**
+   * Check if a given node has one of its ancestor tag name matching the
+   * provided one.
+   * @param  HTMLElement node
+   * @param  String      tagName
+   * @param  Number      maxDepth
+   * @param  Function    filterFn a filter to invoke to determine whether this node 'counts'
+   * @return Boolean
+   */
+  _hasAncestorTag: function(node, tagName, maxDepth, filterFn) {
+    maxDepth = maxDepth || 3;
+    tagName = tagName.toUpperCase();
+    var depth = 0;
+    while (node.parentNode) {
+      if (maxDepth > 0 && depth > maxDepth)
+        return false;
+      if (node.parentNode.tagName === tagName && (!filterFn || filterFn(node.parentNode)))
+        return true;
+      node = node.parentNode;
+      depth++;
+    }
+    return false;
+  },
+
+  /**
+   * Return an object indicating how many rows and columns this table has.
+   */
+  _getRowAndColumnCount: function(table) {
+    var rows = 0;
+    var columns = 0;
+    var trs = table.getElementsByTagName("tr");
+    for (var i = 0; i < trs.length; i++) {
+      var rowspan = trs[i].getAttribute("rowspan") || 0;
+      if (rowspan) {
+        rowspan = parseInt(rowspan, 10);
+      }
+      rows += (rowspan || 1);
+
+      // Now look for column-related info
+      var columnsInThisRow = 0;
+      var cells = trs[i].getElementsByTagName("td");
+      for (var j = 0; j < cells.length; j++) {
+        var colspan = cells[j].getAttribute("colspan") || 0;
+        if (colspan) {
+          colspan = parseInt(colspan, 10);
+        }
+        columnsInThisRow += (colspan || 1);
+      }
+      columns = Math.max(columns, columnsInThisRow);
+    }
+    return {rows: rows, columns: columns};
+  },
+
+  /**
+   * Look for 'data' (as opposed to 'layout') tables, for which we use
+   * similar checks as
+   * https://searchfox.org/mozilla-central/rev/f82d5c549f046cb64ce5602bfd894b7ae807c8f8/accessible/generic/TableAccessible.cpp#19
+   */
+  _markDataTables: function(root) {
+    var tables = root.getElementsByTagName("table");
+    for (var i = 0; i < tables.length; i++) {
+      var table = tables[i];
+      var role = table.getAttribute("role");
+      if (role == "presentation") {
+        table._readabilityDataTable = false;
+        continue;
+      }
+      var datatable = table.getAttribute("datatable");
+      if (datatable == "0") {
+        table._readabilityDataTable = false;
+        continue;
+      }
+      var summary = table.getAttribute("summary");
+      if (summary) {
+        table._readabilityDataTable = true;
+        continue;
+      }
+
+      var caption = table.getElementsByTagName("caption")[0];
+      if (caption && caption.childNodes.length > 0) {
+        table._readabilityDataTable = true;
+        continue;
+      }
+
+      // If the table has a descendant with any of these tags, consider a data table:
+      var dataTableDescendants = ["col", "colgroup", "tfoot", "thead", "th"];
+      var descendantExists = function(tag) {
+        return !!table.getElementsByTagName(tag)[0];
+      };
+      if (dataTableDescendants.some(descendantExists)) {
+        this.log("Data table because found data-y descendant");
+        table._readabilityDataTable = true;
+        continue;
+      }
+
+      // Nested tables indicate a layout table:
+      if (table.getElementsByTagName("table")[0]) {
+        table._readabilityDataTable = false;
+        continue;
+      }
+
+      var sizeInfo = this._getRowAndColumnCount(table);
+      if (sizeInfo.rows >= 10 || sizeInfo.columns > 4) {
+        table._readabilityDataTable = true;
+        continue;
+      }
+      // Now just go by size entirely:
+      table._readabilityDataTable = sizeInfo.rows * sizeInfo.columns > 10;
+    }
+  },
+
+  /* convert images and figures that have properties like data-src into images that can be loaded without JS */
+  _fixLazyImages: function (root) {
+    this._forEachNode(this._getAllNodesWithTag(root, ["img", "picture", "figure"]), function (elem) {
+      // In some sites (e.g. Kotaku), they put 1px square image as base64 data uri in the src attribute.
+      // So, here we check if the data uri is too short, just might as well remove it.
+      if (elem.src && this.REGEXPS.b64DataUrl.test(elem.src)) {
+        // Make sure it's not SVG, because SVG can have a meaningful image in under 133 bytes.
+        var parts = this.REGEXPS.b64DataUrl.exec(elem.src);
+        if (parts[1] === "image/svg+xml") {
+          return;
+        }
+
+        // Make sure this element has other attributes which contains image.
+        // If it doesn't, then this src is important and shouldn't be removed.
+        var srcCouldBeRemoved = false;
+        for (var i = 0; i < elem.attributes.length; i++) {
+          var attr = elem.attributes[i];
+          if (attr.name === "src") {
+            continue;
+          }
+
+          if (/\.(jpg|jpeg|png|webp)/i.test(attr.value)) {
+            srcCouldBeRemoved = true;
+            break;
+          }
+        }
+
+        // Here we assume if image is less than 100 bytes (or 133B after encoded to base64)
+        // it will be too small, therefore it might be placeholder image.
+        if (srcCouldBeRemoved) {
+          var b64starts = elem.src.search(/base64\s*/i) + 7;
+          var b64length = elem.src.length - b64starts;
+          if (b64length < 133) {
+            elem.removeAttribute("src");
+          }
+        }
+      }
+
+      // also check for "null" to work around https://github.com/jsdom/jsdom/issues/2580
+      if ((elem.src || (elem.srcset && elem.srcset != "null")) && elem.className.toLowerCase().indexOf("lazy") === -1) {
+        return;
+      }
+
+      for (var j = 0; j < elem.attributes.length; j++) {
+        attr = elem.attributes[j];
+        if (attr.name === "src" || attr.name === "srcset" || attr.name === "alt") {
+          continue;
+        }
+        var copyTo = null;
+        if (/\.(jpg|jpeg|png|webp)\s+\d/.test(attr.value)) {
+          copyTo = "srcset";
+        } else if (/^\s*\S+\.(jpg|jpeg|png|webp)\S*\s*$/.test(attr.value)) {
+          copyTo = "src";
+        }
+        if (copyTo) {
+          //if this is an img or picture, set the attribute directly
+          if (elem.tagName === "IMG" || elem.tagName === "PICTURE") {
+            elem.setAttribute(copyTo, attr.value);
+          } else if (elem.tagName === "FIGURE" && !this._getAllNodesWithTag(elem, ["img", "picture"]).length) {
+            //if the item is a <figure> that does not contain an image or picture, create one and place it inside the figure
+            //see the nytimes-3 testcase for an example
+            var img = this._doc.createElement("img");
+            img.setAttribute(copyTo, attr.value);
+            elem.appendChild(img);
+          }
+        }
+      }
+    });
+  },
+
+  _getTextDensity: function(e, tags) {
+    var textLength = this._getInnerText(e, true).length;
+    if (textLength === 0) {
+      return 0;
+    }
+    var childrenLength = 0;
+    var children = this._getAllNodesWithTag(e, tags);
+    this._forEachNode(children, (child) => childrenLength += this._getInnerText(child, true).length);
+    return childrenLength / textLength;
+  },
+
+  /**
+   * Clean an element of all tags of type "tag" if they look fishy.
+   * "Fishy" is an algorithm based on content length, classnames, link density, number of images & embeds, etc.
+   *
+   * @return void
+   **/
+  _cleanConditionally: function(e, tag) {
+    if (!this._flagIsActive(this.FLAG_CLEAN_CONDITIONALLY))
+      return;
+
+    // Gather counts for other typical elements embedded within.
+    // Traverse backwards so we can remove nodes at the same time
+    // without effecting the traversal.
+    //
+    // TODO: Consider taking into account original contentScore here.
+    this._removeNodes(this._getAllNodesWithTag(e, [tag]), function(node) {
+      // First check if this node IS data table, in which case don't remove it.
+      var isDataTable = function(t) {
+        return t._readabilityDataTable;
+      };
+
+      var isList = tag === "ul" || tag === "ol";
+      if (!isList) {
+        var listLength = 0;
+        var listNodes = this._getAllNodesWithTag(node, ["ul", "ol"]);
+        this._forEachNode(listNodes, (list) => listLength += this._getInnerText(list).length);
+        isList = listLength / this._getInnerText(node).length > 0.9;
+      }
+
+      if (tag === "table" && isDataTable(node)) {
+        return false;
+      }
+
+      // Next check if we're inside a data table, in which case don't remove it as well.
+      if (this._hasAncestorTag(node, "table", -1, isDataTable)) {
+        return false;
+      }
+
+      if (this._hasAncestorTag(node, "code")) {
+        return false;
+      }
+
+      var weight = this._getClassWeight(node);
+
+      this.log("Cleaning Conditionally", node);
+
+      var contentScore = 0;
+
+      if (weight + contentScore < 0) {
+        return true;
+      }
+
+      if (this._getCharCount(node, ",") < 10) {
+        // If there are not very many commas, and the number of
+        // non-paragraph elements is more than paragraphs or other
+        // ominous signs, remove the element.
+        var p = node.getElementsByTagName("p").length;
+        var img = node.getElementsByTagName("img").length;
+        var li = node.getElementsByTagName("li").length - 100;
+        var input = node.getElementsByTagName("input").length;
+        var headingDensity = this._getTextDensity(node, ["h1", "h2", "h3", "h4", "h5", "h6"]);
+
+        var embedCount = 0;
+        var embeds = this._getAllNodesWithTag(node, ["object", "embed", "iframe"]);
+
+        for (var i = 0; i < embeds.length; i++) {
+          // If this embed has attribute that matches video regex, don't delete it.
+          for (var j = 0; j < embeds[i].attributes.length; j++) {
+            if (this.REGEXPS.videos.test(embeds[i].attributes[j].value)) {
+              return false;
+            }
+          }
+
+          // For embed with <object> tag, check inner HTML as well.
+          if (embeds[i].tagName === "object" && this.REGEXPS.videos.test(embeds[i].innerHTML)) {
+            return false;
+          }
+
+          embedCount++;
+        }
+
+        var linkDensity = this._getLinkDensity(node);
+        var contentLength = this._getInnerText(node).length;
+
+        var haveToRemove =
+          (img > 1 && p / img < 0.5 && !this._hasAncestorTag(node, "figure")) ||
+          (!isList && li > p) ||
+          (input > Math.floor(p/3)) ||
+          (!isList && headingDensity < 0.9 && contentLength < 25 && (img === 0 || img > 2) && !this._hasAncestorTag(node, "figure")) ||
+          (!isList && weight < 25 && linkDensity > 0.2) ||
+          (weight >= 25 && linkDensity > 0.5) ||
+          ((embedCount === 1 && contentLength < 75) || embedCount > 1);
+        return haveToRemove;
+      }
+      return false;
+    });
+  },
+
+  /**
+   * Clean out elements that match the specified conditions
+   *
+   * @param Element
+   * @param Function determines whether a node should be removed
+   * @return void
+   **/
+  _cleanMatchedNodes: function(e, filter) {
+    var endOfSearchMarkerNode = this._getNextNode(e, true);
+    var next = this._getNextNode(e);
+    while (next && next != endOfSearchMarkerNode) {
+      if (filter.call(this, next, next.className + " " + next.id)) {
+        next = this._removeAndGetNext(next);
+      } else {
+        next = this._getNextNode(next);
+      }
+    }
+  },
+
+  /**
+   * Clean out spurious headers from an Element.
+   *
+   * @param Element
+   * @return void
+  **/
+  _cleanHeaders: function(e) {
+    let headingNodes = this._getAllNodesWithTag(e, ["h1", "h2"]);
+    this._removeNodes(headingNodes, function(node) {
+      let shouldRemove = this._getClassWeight(node) < 0;
+      if (shouldRemove) {
+        this.log("Removing header with low class weight:", node);
+      }
+      return shouldRemove;
+    });
+  },
+
+  /**
+   * Check if this node is an H1 or H2 element whose content is mostly
+   * the same as the article title.
+   *
+   * @param Element  the node to check.
+   * @return boolean indicating whether this is a title-like header.
+   */
+  _headerDuplicatesTitle: function(node) {
+    if (node.tagName != "H1" && node.tagName != "H2") {
+      return false;
+    }
+    var heading = this._getInnerText(node, false);
+    this.log("Evaluating similarity of header:", heading, this._articleTitle);
+    return this._textSimilarity(this._articleTitle, heading) > 0.75;
+  },
+
+  _flagIsActive: function(flag) {
+    return (this._flags & flag) > 0;
+  },
+
+  _removeFlag: function(flag) {
+    this._flags = this._flags & ~flag;
+  },
+
+  _isProbablyVisible: function(node) {
+    // Have to null-check node.style and node.className.indexOf to deal with SVG and MathML nodes.
+    return (!node.style || node.style.display != "none")
+      && !node.hasAttribute("hidden")
+      //check for "fallback-image" so that wikimedia math images are displayed
+      && (!node.hasAttribute("aria-hidden") || node.getAttribute("aria-hidden") != "true" || (node.className && node.className.indexOf && node.className.indexOf("fallback-image") !== -1));
+  },
+
+  /**
+   * Runs readability.
+   *
+   * Workflow:
+   *  1. Prep the document by removing script tags, css, etc.
+   *  2. Build readability's DOM tree.
+   *  3. Grab the article content from the current dom tree.
+   *  4. Replace the current DOM tree with the new one.
+   *  5. Read peacefully.
+   *
+   * @return void
+   **/
+  parse: function () {
+    // Avoid parsing too large documents, as per configuration option
+    if (this._maxElemsToParse > 0) {
+      var numTags = this._doc.getElementsByTagName("*").length;
+      if (numTags > this._maxElemsToParse) {
+        throw new Error("Aborting parsing document; " + numTags + " elements found");
+      }
+    }
+
+    // Unwrap image from noscript
+    this._unwrapNoscriptImages(this._doc);
+
+    // Extract JSON-LD metadata before removing scripts
+    var jsonLd = this._disableJSONLD ? {} : this._getJSONLD(this._doc);
+
+    // Remove script tags from the document.
+    this._removeScripts(this._doc);
+
+    this._prepDocument();
+
+    var metadata = this._getArticleMetadata(jsonLd);
+    this._articleTitle = metadata.title;
+
+    var articleContent = this._grabArticle();
+    if (!articleContent)
+      return null;
+
+    this.log("Grabbed: " + articleContent.innerHTML);
+
+    this._postProcessContent(articleContent);
+
+    // If we haven't found an excerpt in the article's metadata, use the article's
+    // first paragraph as the excerpt. This is used for displaying a preview of
+    // the article's content.
+    if (!metadata.excerpt) {
+      var paragraphs = articleContent.getElementsByTagName("p");
+      if (paragraphs.length > 0) {
+        metadata.excerpt = paragraphs[0].textContent.trim();
+      }
+    }
+
+    var textContent = articleContent.textContent;
+    return {
+      title: this._articleTitle,
+      byline: metadata.byline || this._articleByline,
+      dir: this._articleDir,
+      lang: this._articleLang,
+      content: this._serializer(articleContent),
+      textContent: textContent,
+      length: textContent.length,
+      excerpt: metadata.excerpt,
+      siteName: metadata.siteName || this._articleSiteName
+    };
+  }
+};
+
+if (typeof module === "object") {
+  module.exports = Readability;
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readability/readability-readerable-0.4.2.js b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readability/readability-readerable-0.4.2.js
new file mode 100644
index 0000000000..64be5e15e8
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readability/readability-readerable-0.4.2.js
@@ -0,0 +1,108 @@
+/* eslint-env es6:false */
+/*
+ * Copyright (c) 2010 Arc90 Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * This code is heavily based on Arc90's readability.js (1.7.1) script
+ * available at: http://code.google.com/p/arc90labs-readability
+ */
+
+var REGEXPS = {
+  // NOTE: These two regular expressions are duplicated in
+  // Readability.js. Please keep both copies in sync.
+  unlikelyCandidates: /-ad-|ai2html|banner|breadcrumbs|combx|comment|community|cover-wrap|disqus|extra|footer|gdpr|header|legends|menu|related|remark|replies|rss|shoutbox|sidebar|skyscraper|social|sponsor|supplemental|ad-break|agegate|pagination|pager|popup|yom-remote/i,
+  okMaybeItsACandidate: /and|article|body|column|content|main|shadow/i,
+};
+
+function isNodeVisible(node) {
+  // Have to null-check node.style and node.className.indexOf to deal with SVG and MathML nodes.
+  return (!node.style || node.style.display != "none")
+    && !node.hasAttribute("hidden")
+    //check for "fallback-image" so that wikimedia math images are displayed
+    && (!node.hasAttribute("aria-hidden") || node.getAttribute("aria-hidden") != "true" || (node.className && node.className.indexOf && node.className.indexOf("fallback-image") !== -1));
+}
+
+/**
+ * Decides whether or not the document is reader-able without parsing the whole thing.
+ * @param {Object} options Configuration object.
+ * @param {number} [options.minContentLength=140] The minimum node content length used to decide if the document is readerable.
+ * @param {number} [options.minScore=20] The minumum cumulated 'score' used to determine if the document is readerable.
+ * @param {Function} [options.visibilityChecker=isNodeVisible] The function used to determine if a node is visible.
+ * @return {boolean} Whether or not we suspect Readability.parse() will suceeed at returning an article object.
+ */
+function isProbablyReaderable(doc, options = {}) {
+  // For backward compatibility reasons 'options' can either be a configuration object or the function used
+  // to determine if a node is visible.
+  if (typeof options == "function") {
+    options = { visibilityChecker: options };
+  }
+
+  var defaultOptions = { minScore: 20, minContentLength: 140, visibilityChecker: isNodeVisible };
+  options = Object.assign(defaultOptions, options);
+
+  var nodes = doc.querySelectorAll("p, pre, article");
+
+  // Get <div> nodes which have <br> node(s) and append them into the `nodes` variable.
+  // Some articles' DOM structures might look like
+  // <div>
+  //   Sentences<br>
+  //   <br>
+  //   Sentences<br>
+  // </div>
+  var brNodes = doc.querySelectorAll("div > br");
+  if (brNodes.length) {
+    var set = new Set(nodes);
+    [].forEach.call(brNodes, function (node) {
+      set.add(node.parentNode);
+    });
+    nodes = Array.from(set);
+  }
+
+  var score = 0;
+  // This is a little cheeky, we use the accumulator 'score' to decide what to return from
+  // this callback:
+  return [].some.call(nodes, function (node) {
+    if (!options.visibilityChecker(node)) {
+      return false;
+    }
+
+    var matchString = node.className + " " + node.id;
+    if (REGEXPS.unlikelyCandidates.test(matchString) &&
+        !REGEXPS.okMaybeItsACandidate.test(matchString)) {
+      return false;
+    }
+
+    if (node.matches("li p")) {
+      return false;
+    }
+
+    var textContentLength = node.textContent.trim().length;
+    if (textContentLength < options.minContentLength) {
+      return false;
+    }
+
+    score += Math.sqrt(textContentLength - options.minContentLength);
+
+    if (score > options.minScore) {
+      return true;
+    }
+    return false;
+  });
+}
+
+if (typeof module === "object") {
+  module.exports = isProbablyReaderable;
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview-background.js b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview-background.js
new file mode 100644
index 0000000000..136e5e40e3
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview-background.js
@@ -0,0 +1,22 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This background script is needed to update the current tab
+// and activate reader view.
+
+browser.runtime.onMessage.addListener(message => {
+  switch (message.action) {
+     case 'addSerializedDoc':
+        browser.storage.session.set({ [message.id]: message.doc });
+        return Promise.resolve();
+     case 'getSerializedDoc':
+        return (async () => {
+          let doc = await browser.storage.session.get(message.id);
+          browser.storage.session.remove(message.id);
+          return doc[message.id];
+        })();
+     default:
+       console.error(`Received unsupported action ${message.action}`);
+   }
+});
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview-content.js b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview-content.js
new file mode 100644
index 0000000000..1d5859e793
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview-content.js
@@ -0,0 +1,75 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This script is injected into content to determine whether or not a
+// page is readerable, and to open a reader view extension page via
+// the background script.
+
+const supportedProtocols = ["http:", "https:"];
+
+// Prevent false positives for these sites. This list is taken from Fennec:
+// https://dxr.mozilla.org/mozilla-central/rev/7d47e7fa2489550ffa83aae67715c5497048923f/toolkit/components/reader/Readerable.js#45
+const blockedHosts = [
+  "amazon.com",
+  "github.com",
+  "mail.google.com",
+  "pinterest.com",
+  "reddit.com",
+  "twitter.com",
+  "youtube.com"
+];
+
+function isReaderable() {
+    if (!supportedProtocols.includes(location.protocol)) {
+      return false;
+    }
+
+    if (blockedHosts.some(blockedHost => location.hostname.endsWith(blockedHost))) {
+      return false;
+    }
+
+    if (location.pathname == "/") {
+      return false;
+    }
+
+    return isProbablyReaderable(document, _isNodeVisible);
+}
+
+function _isNodeVisible(node) {
+    return node.clientHeight > 0 && node.clientWidth > 0;
+}
+
+function connectNativePort() {
+  let port = browser.runtime.connectNative("mozacReaderview");
+  port.onMessage.addListener((message) => {
+     switch (message.action) {
+       case 'cachePage':
+         let serializedDoc = new XMLSerializer().serializeToString(document);
+         browser.runtime.sendMessage({action: "addSerializedDoc", doc: serializedDoc, id: message.id});
+         break;
+       case 'checkReaderState':
+         port.postMessage({type: 'checkReaderState', baseUrl: browser.runtime.getURL("/"), readerable: isReaderable()});
+         break;
+       default:
+         console.error(`Received unsupported action ${message.action}`);
+     }
+  });
+
+  return port;
+}
+
+let port = connectNativePort();
+
+// When navigating to a cached page, this content script won't run again, but we
+// do want to connect a new native port to trigger a new readerable check and
+// apply the same logic (as on page load) in our feature class (e.g. updating the
+// toolbar etc.)
+window.addEventListener("pageshow", (event) => {
+  port = (port != null)? port : connectNativePort();
+});
+
+window.addEventListener("pagehide", (event) => {
+  port.disconnect();
+  port = null;
+});
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview.css b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview.css
new file mode 100644
index 0000000000..d058e12061
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview.css
@@ -0,0 +1,319 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+.mozac-readerview-body {
+  padding: 20px;
+  transition-property: background-color, color;
+  transition-duration: 0.4s;
+  max-width: 35em;
+  margin-left: auto;
+  margin-right: auto;
+}
+
+.mozac-readerview-body.light {
+  background-color: #ffffff;
+  color: #222222;
+}
+
+.mozac-readerview-body.sepia {
+  color: #5b4636;
+  background-color: #f4ecd8;
+}
+
+.mozac-readerview-body.dark {
+  background-color: #1c1b22;
+  color: #eeeeee;
+}
+
+.mozac-readerview-body.light * {
+  color: #222222;
+}
+
+.mozac-readerview-body.sepia * {
+  color: #5b4636;
+}
+
+.mozac-readerview-body.dark * {
+  color: #eeeeee;
+}
+
+.mozac-readerview-body.sans-serif * {
+  font-family: sans-serif !important;
+}
+
+.mozac-readerview-body.serif * {
+  font-family: serif !important;
+}
+
+/* Override some controls and content styles based on color scheme */
+
+.mozac-readerview-body.light > .container > .header > .domain {
+  color: #ee7600;
+  border-bottom-color: #d0d0d0;
+}
+
+.mozac-readerview-body.light > .container > .header > h1 {
+  color: #222222;
+}
+
+.mozac-readerview-body.light > .container > .header > .credits {
+  color: #898989;
+}
+
+.mozac-readerview-body.dark > .container > .header > .domain {
+  color: #ff9400;
+  border-bottom-color: #777777;
+}
+
+.mozac-readerview-body.dark > .container > .header > h1 {
+  color: #eeeeee;
+}
+
+.mozac-readerview-body.dark > .container > .header > .credits {
+  color: #aaaaaa;
+}
+
+.mozac-readerview-body.sepia > .container > .header > .domain {
+  border-bottom-color: #5b4636 !important;
+}
+
+.mozac-readerview-body.sepia > .container > .footer {
+  background-color: #dedad4 !important;
+}
+
+.mozac-readerview-body.light > .container > .content .caption,
+.mozac-readerview-body.light > .container > .content .wp-caption-text,
+.mozac-readerview-body.light > .container > .content figcaption {
+  color: #898989;
+}
+
+.mozac-readerview-body.dark > .container > .content .caption,
+.mozac-readerview-body.dark > .container > .content .wp-caption-text,
+.mozac-readerview-body.dark > .container > .content figcaption {
+  color: #aaaaaa;
+}
+
+.mozac-readerview-body.light > .container > .content blockquote {
+  color: #898989 !important;
+  border-left-color: #d0d0d0 !important;
+}
+
+.mozac-readerview-body.sepia blockquote {
+  border-inline-start: 2px solid #5b4636 !important;
+}
+
+.mozac-readerview-body.dark > .container > .content blockquote {
+  color: #aaaaaa !important;
+  border-left-color: #777777 !important;
+}
+
+.mozac-readerview-body > .container > hr {
+  margin: 0px;
+}
+
+.mozac-readerview-body > .container > .header {
+  text-align: start;
+  padding-bottom: 10px;
+}
+
+.mozac-readerview-body > .container > .header > .credits {
+  font-size: 0.9em;
+}
+
+.mozac-readerview-body > .container > .header > .domain {
+  margin-top: 10px;
+  padding-bottom: 10px;
+  color: #00acff !important;
+  text-decoration: none;
+}
+
+.mozac-readerview-body > .container > .header > .domain-border {
+  margin-top: 15px;
+  border-bottom: 1.5px solid #777777;
+  width: 50%;
+}
+
+.mozac-readerview-body > .container > .header > h1 {
+  font-size: 1.33em;
+  font-weight: 700;
+  line-height: 1.1em;
+  width: 100%;
+  margin: 0px;
+  margin-top: 32px;
+  margin-bottom: 16px;
+  padding: 0px;
+}
+
+.mozac-readerview-body > .container > .header > .credits {
+  padding: 0px;
+  margin: 0px;
+  margin-bottom: 32px;
+}
+
+.mozac-readerview-body > .container > .header > .meta-data {
+  font-size: 0.65em;
+  margin: 0 0 15px 0;
+}
+
+.mozac-readerview-body > .container > .content {
+  padding-top: 10px;
+  padding-left: 0px;
+  padding-right: 0px;
+}
+
+/*======= Article content =======*/
+.mozac-readerview-content {
+  font-size: 1em;
+}
+
+.mozac-readerview-content a {
+  text-decoration: underline !important;
+  font-weight: normal;
+}
+
+.mozac-readerview-body.dark :is(
+        .mozac-readerview-content a,
+        .mozac-readerview-content a:hover,
+        .mozac-readerview-content a:active
+    ):not(.mozac-readerview-content a:visited) {
+  color: #45a1ff !important;
+}
+
+.mozac-readerview-content a,
+.mozac-readerview-content a:hover,
+.mozac-readerview-content a:active
+:not(.mozac-readerview-content a:visited) {
+  color: #0060df !important;
+}
+
+.mozac-readerview-content a:visited {
+  color: #b5007f !important;
+}
+
+.mozac-readerview-content h1 {
+  margin-top: 16px;
+  margin-bottom: 16px;
+  font-weight: 700;
+  font-size: 1.6em;
+}
+
+.mozac-readerview-content h2 {
+  margin-top: 16px;
+  margin-bottom: 16px;
+  font-weight: 700;
+  font-size: 1.2em;
+}
+
+.mozac-readerview-content h3 {
+  margin-top: 16px;
+  margin-bottom: 16px;
+  font-weight: 700;
+  font-size: 1em;
+}
+
+.mozac-readerview-content * {
+  max-width: 100% !important;
+  height: auto !important;
+}
+
+.mozac-readerview-content p {
+  font-size: 1em !important;
+  line-height: 1.4em !important;
+  margin: 0px !important;
+  margin-bottom: 20px !important;
+}
+
+/* Covers all images showing edge-to-edge using a
+   an optional caption text */
+.mozac-readerview-content .wp-caption,
+.mozac-readerview-content figure {
+  display: block !important;
+  width: 100% !important;
+  margin: 0px !important;
+  margin-bottom: 32px !important;
+}
+
+/* Images marked to be shown edge-to-edge with an
+   optional captio ntext */
+.mozac-readerview-content p > img:only-child,
+.mozac-readerview-content p > a:only-child > img:only-child,
+.mozac-readerview-content .wp-caption img,
+.mozac-readerview-content figure img {
+  display: block;
+  margin-left: auto;
+  margin-right: auto;
+}
+
+/* Account for body padding to make image full width */
+.mozac-readerview-content img[moz-reader-full-width] {
+  width: calc(100% + 40px);
+  margin-left: -20px;
+  margin-right: -20px;
+  max-width: none !important;
+}
+
+/* Image caption text */
+.mozac-readerview-content .caption,
+.mozac-readerview-content .wp-caption-text,
+.mozac-readerview-content figcaption {
+  font-size: 0.9em;
+  font-family: sans-serif;
+  margin: 0px !important;
+  padding-top: 4px !important;
+}
+
+/* Ensure all pre-formatted code inside the reader content
+   are properly wrapped inside content width */
+.mozac-readerview-content code,
+.mozac-readerview-content pre {
+  white-space: pre-wrap !important;
+  margin-bottom: 20px !important;
+}
+
+.mozac-readerview-content blockquote {
+  margin: 0px !important;
+  margin-bottom: 20px !important;
+  padding: 0px !important;
+  padding-inline-start: 16px !important;
+  border: 0px !important;
+  border-left: 2px solid !important;
+}
+
+.mozac-readerview-content ul,
+.mozac-readerview-content ol {
+  margin: 0px !important;
+  margin-bottom: 20px !important;
+  padding: 0px !important;
+  line-height: 1.5em;
+}
+
+.mozac-readerview-content ul {
+  padding-inline-start: 30px !important;
+  list-style: disc !important;
+}
+
+.mozac-readerview-content ol {
+  padding-inline-start: 35px !important;
+  list-style: decimal !important;
+}
+
+/* Hide elements with common "hidden" class names */
+.mozac-readerview-content .visually-hidden,
+.mozac-readerview-content .visuallyhidden,
+.mozac-readerview-content .hidden,
+.mozac-readerview-content .invisible,
+.mozac-readerview-content .sr-only {
+}
+
+/* Enforce wordpress and similar emoji/smileys aren't sized to be full-width,
+ * see bug 1399616 for context. */
+.mozac-readerview-content img.wp-smiley,
+.mozac-readerview-content img.emoji {
+  display: inline-block;
+  border-width: 0;
+  /* height: auto is implied from `.mozac-readerview-content *` rule. */
+  width: 1em;
+  margin: 0 .07em;
+  padding: 0;
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview.html b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview.html
new file mode 100644
index 0000000000..b09deb7811
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview.html
@@ -0,0 +1,17 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<html>
+  <head>
+      <meta content="text/html; charset=UTF-8" http-equiv="content-type" />
+      <meta name="viewport" content="width=device-width; user-scalable=0" />
+      <meta http-equiv="cache-control" content="no-store" />
+
+      <link rel="stylesheet" href="readerview.css" />
+
+      <script src="readability/JSDOMParser-0.4.2.js"></script>
+      <script src="readability/readability-0.4.2.js"></script>
+      <script src="readerview.js"></script>
+  </head>
+</html>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview.js b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview.js
new file mode 100644
index 0000000000..23b1f35250
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview.js
@@ -0,0 +1,366 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Class names to preserve in the readerized output. We preserve these class
+// names so that rules in readerview.css can match them. This list is taken from Fennec:
+// https://dxr.mozilla.org/mozilla-central/rev/7d47e7fa2489550ffa83aae67715c5497048923f/toolkit/components/reader/ReaderMode.jsm#21
+const preservedClasses = [
+  "caption",
+  "emoji",
+  "hidden",
+  "invisible",
+  "sr-only",
+  "visually-hidden",
+  "visuallyhidden",
+  "wp-caption",
+  "wp-caption-text",
+  "wp-smiley"
+];
+
+class ReaderView {
+
+  static get MIN_FONT_SIZE() {
+    return 1;
+  }
+
+  static get MAX_FONT_SIZE() {
+    return 9;
+  }
+
+  /**
+   * Shows a reader view for the provided document. This method is used when activating
+   * reader view on the original page. In this case, we already have the DOM (passed
+   * through in the message from the background script) and can parse it directly.
+   *
+   * @param doc the document to make readerable.
+   * @param url the url of the article.
+   * @param options the fontSize, fontType and colorScheme to use.
+   */
+  show(doc, url, options = {fontSize: 4, fontType: "sans-serif", colorScheme: "light"}) {
+    let result = new Readability(doc, {classesToPreserve: preservedClasses}).parse();
+    result.language = doc.documentElement.lang;
+    document.title = result.title;
+
+    let article = Object.assign(
+      result,
+      {url: new URL(url)},
+      {readingTime: this.getReadingTime(result.length, result.language)},
+      {byline: this.getByline(result)},
+      {dir: this.getTextDirection(result)},
+      {title: this.getTitle(result)}
+    );
+
+    document.body.outerHTML = this.createHtmlBody(article);
+
+    this.setFontSize(options.fontSize);
+    this.setFontType(options.fontType);
+    this.setColorScheme(options.colorScheme);
+    if (options.scrollY) {
+      window.scrollTo({top: options.scrollY, left: 0, behavior: "instant"});
+    }
+  }
+
+  /**
+   * Allows adjusting the font size in discrete steps between ReaderView.MIN_FONT_SIZE
+   * and ReaderView.MAX_FONT_SIZE.
+   *
+   * @param changeAmount e.g. +1, or -1.
+   */
+  changeFontSize(changeAmount) {
+    var size = Math.max(ReaderView.MIN_FONT_SIZE, Math.min(ReaderView.MAX_FONT_SIZE, this.fontSize + changeAmount));
+    this.setFontSize(size);
+  }
+
+  /**
+   * Sets the font size.
+   *
+   * @param fontSize must be value between ReaderView.MIN_FONT_SIZE
+   * and ReaderView.MAX_FONT_SIZE.
+   */
+  setFontSize(fontSize) {
+    let size = (10 + 2 * fontSize) + "px";
+    let readerView = document.getElementById("mozac-readerview-container");
+    readerView.style.setProperty("font-size", size);
+    this.fontSize = fontSize;
+  }
+
+  /**
+   * Sets the font type.
+   *
+   * @param fontType the font type to use.
+   */
+  setFontType(fontType) {
+    let bodyClasses = document.body.classList;
+
+    if (this.fontType) {
+      bodyClasses.remove(this.fontType);
+    }
+
+    this.fontType = fontType;
+    bodyClasses.add(this.fontType);
+  }
+
+  /**
+   * Sets the color scheme.
+   *
+   * @param colorScheme the color scheme to use, must be either light, dark
+   * or sepia.
+   */
+  setColorScheme(colorScheme) {
+    if(!['light', 'sepia', 'dark'].includes(colorScheme)) {
+      console.error(`Invalid color scheme specified: ${colorScheme}`)
+      return;
+    }
+
+    let bodyClasses = document.body.classList;
+
+    if (this.colorScheme) {
+      bodyClasses.remove(this.colorScheme);
+    }
+
+    this.colorScheme = colorScheme;
+    bodyClasses.add(this.colorScheme);
+  }
+
+  /**
+   * Create the reader view HTML body.
+   *
+   * @param article a JSONObject representing the article to show.
+   */
+  createHtmlBody(article) {
+    const safeDir = this.escapeHTML(article.dir);
+    const safeTitle = this.escapeHTML(article.title);
+    const safeByline = this.escapeHTML(article.byline);
+    const safeReadingTime = this.escapeHTML(article.readingTime);
+    return `
+      <body class="mozac-readerview-body">
+        <div id="mozac-readerview-container" class="container" dir="${safeDir}">
+          <div class="header">
+            <a class="domain" href="${article.url.href}">${article.url.hostname}</a>
+            <div class="domain-border"></div>
+            <h1>${safeTitle}</h1>
+            <div class="credits">${safeByline}</div>
+            <div>
+              <div>${safeReadingTime}</div>
+            </div>
+          </div>
+          <hr>
+
+          <div class="content">
+            <div class="mozac-readerview-content">${article.content}</div>
+          </div>
+        </div>
+      </body>
+    `
+  }
+
+  /**
+   * Returns the estimated reading time as localized string.
+   *
+   * @param length of the article (number of chars).
+   * @param optional language of the article, defaults to en.
+   */
+  getReadingTime(length, lang = "en") {
+    const [readingSpeed, readingSpeedLang] = this.getReadingSpeedForLanguage(lang);
+    const charactersPerMinuteLow = readingSpeed.cpm - readingSpeed.variance;
+    const charactersPerMinuteHigh = readingSpeed.cpm + readingSpeed.variance;
+    const readingTimeMinsSlow = Math.ceil(length / charactersPerMinuteLow);
+    const readingTimeMinsFast  = Math.ceil(length / charactersPerMinuteHigh);
+
+    // Construct a localized and "humanized" reading time in minutes.
+    // If we have both a fast and slow reading time we'll show both e.g.
+    // "2 - 4 minutes", otherwise we'll just show "4 minutes".
+    try {
+      var parts = new Intl.RelativeTimeFormat(readingSpeedLang).formatToParts(readingTimeMinsSlow, 'minute');
+      if (parts.length == 3) {
+        // No need to use part[0] which represents the literal "in".
+        var readingTime = parts[1].value; // reading time in minutes
+        var minutesLiteral = parts[2].value; // localized singular or plural literal of 'minute'
+        var readingTimeString = `${readingTime} ${minutesLiteral}`;
+        if (readingTimeMinsSlow != readingTimeMinsFast) {
+          readingTimeString = `${readingTimeMinsFast} - ${readingTimeString}`;
+        }
+        return readingTimeString;
+      }
+    }
+    catch(error) {
+      console.error(`Failed to format reading time: ${error}`);
+    }
+
+    return "";
+  }
+
+  /**
+   * Returns the reading speed of a selection of languages with likely variance.
+   *
+   * Reading speed estimated from a study done on reading speeds in various languages.
+   * study can be found here: http://iovs.arvojournals.org/article.aspx?articleid=2166061
+   *
+   * @return object with characters per minute and variance. Defaults to English
+   * if no suitable language is found in the collection.
+   */
+  getReadingSpeedForLanguage(lang) {
+    const readingSpeed = new Map([
+      [ "en", {cpm: 987,  variance: 118 } ],
+      [ "ar", {cpm: 612,  variance: 88 } ],
+      [ "de", {cpm: 920,  variance: 86 } ],
+      [ "es", {cpm: 1025, variance: 127 } ],
+      [ "fi", {cpm: 1078, variance: 121 } ],
+      [ "fr", {cpm: 998,  variance: 126 } ],
+      [ "he", {cpm: 833,  variance: 130 } ],
+      [ "it", {cpm: 950,  variance: 140 } ],
+      [ "jw", {cpm: 357,  variance: 56 } ],
+      [ "nl", {cpm: 978,  variance: 143 } ],
+      [ "pl", {cpm: 916,  variance: 126 } ],
+      [ "pt", {cpm: 913,  variance: 145 } ],
+      [ "ru", {cpm: 986,  variance: 175 } ],
+      [ "sk", {cpm: 885,  variance: 145 } ],
+      [ "sv", {cpm: 917,  variance: 156 } ],
+      [ "tr", {cpm: 1054, variance: 156 } ],
+      [ "zh", {cpm: 255,  variance: 29 } ],
+    ]);
+
+    return readingSpeed.has(lang) ? [readingSpeed.get(lang), lang] : [readingSpeed.get("en"), "en"];
+   }
+
+   getByline(article) {
+     return article.byline || "";
+   }
+
+   /**
+    * Attempts to read the optional text direction from the article and uses
+    * language mapping to detect rtl, if missing.
+    */
+   getTextDirection(article) {
+     if (article.dir) {
+       return article.dir;
+     }
+
+     if (["ar", "fa", "he", "ug", "ur"].includes(article.language)) {
+       return "rtl";
+     }
+
+     return "ltr";
+   }
+
+   getTitle(article) {
+     return article.title || "";
+   }
+
+   escapeHTML(text) {
+     return text
+       .replace(/\&/g, "&amp;")
+       .replace(/\</g, "&lt;")
+       .replace(/\>/g, "&gt;")
+       .replace(/\"/g, "&quot;")
+       .replace(/\'/g, "&#039;");
+   }
+}
+
+function fetchDocument(url) {
+  return new Promise((resolve, reject) => {
+    let xhr = new XMLHttpRequest();
+    xhr.open("GET", url, true);
+    xhr.onerror = evt => reject(evt.error);
+    xhr.responseType = "document";
+    xhr.onload = evt => {
+      if (xhr.status !== 200) {
+        reject("Reader mode XHR failed with status: " + xhr.status);
+        return;
+      }
+      let doc = xhr.responseXML;
+      if (!doc) {
+        reject("Reader mode XHR didn't return a document");
+        return;
+      }
+      resolve(doc);
+    };
+    xhr.send();
+  });
+}
+
+function getPreparedDocument(id, url) {
+  return new Promise((resolve, reject) => {
+
+    browser.runtime.sendMessage({action: "getSerializedDoc", id: id}).then((serializedDoc) => {
+        if (serializedDoc) {
+          let doc = new JSDOMParser().parse(serializedDoc, url);
+          resolve(doc);
+        } else {
+          reject();
+        }
+      }
+    );
+  });
+}
+
+let readerView = new ReaderView();
+connectNativePort();
+prepareBody();
+
+function connectNativePort() {
+  let url = new URL(window.location.href);
+  let articleUrl = url.searchParams.get("url");
+  let id = url.searchParams.get("id");
+  let baseUrl = browser.runtime.getURL("/");
+
+  let port = browser.runtime.connectNative("mozacReaderviewActive");
+  port.onMessage.addListener((message) => {
+    switch (message.action) {
+      case 'show':
+        async function showAsync(options) {
+          try {
+            let doc;
+            if (typeof Promise.any === "function") {
+              doc = await Promise.any([fetchDocument(articleUrl), getPreparedDocument(id, articleUrl)]);
+            } else {
+              try {
+                doc = await getPreparedDocument(id, articleUrl);
+              } catch(e) {
+                doc = await fetchDocument(articleUrl);
+              }
+            }
+            readerView.show(doc, articleUrl, options);
+          } catch(e) {
+            console.log(e);
+            // We weren't able to find the prepared document and also
+            // failed to fetch it. Let's load the original page which
+            // will make sure we show an appropriate error page.
+            window.location.href = articleUrl;
+          }
+        }
+        showAsync(message.value);
+        break;
+      case 'hide':
+        window.location.href = articleUrl;
+      case 'setColorScheme':
+        readerView.setColorScheme(message.value.toLowerCase());
+        break;
+      case 'changeFontSize':
+        readerView.changeFontSize(message.value);
+        break;
+      case 'setFontType':
+        readerView.setFontType(message.value.toLowerCase());
+        break;
+      case 'checkReaderState':
+        port.postMessage({baseUrl: baseUrl, activeUrl: articleUrl, readerable: true});
+        break;
+      default:
+        console.error(`Received invalid action ${message.action}`);
+    }
+  });
+}
+
+/**
+ * Applies the configured color scheme to the HTML body while reader view is loading. This is to
+ * prevent "flashes" caused by having to change the color later.
+ */
+function prepareBody() {
+  let url = new URL(window.location.href);
+  let colorScheme = url.searchParams.get("colorScheme");
+  let body = document.createElement("body");
+  body.classList.add("mozac-readerview-body");
+  body.classList.add(colorScheme);
+  document.body = body;
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/ReaderViewFeature.kt b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/ReaderViewFeature.kt
new file mode 100644
index 0000000000..51d6083a6c
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/ReaderViewFeature.kt
@@ -0,0 +1,382 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview
+
+import android.content.Context
+import androidx.annotation.VisibleForTesting
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.flow.mapNotNull
+import mozilla.components.browser.state.action.EngineAction
+import mozilla.components.browser.state.action.ReaderAction
+import mozilla.components.browser.state.selector.selectedTab
+import mozilla.components.browser.state.state.TabSessionState
+import mozilla.components.browser.state.store.BrowserStore
+import mozilla.components.concept.engine.Engine
+import mozilla.components.concept.engine.webextension.MessageHandler
+import mozilla.components.concept.engine.webextension.Port
+import mozilla.components.feature.readerview.internal.ReaderViewConfig
+import mozilla.components.feature.readerview.internal.ReaderViewControlsInteractor
+import mozilla.components.feature.readerview.internal.ReaderViewControlsPresenter
+import mozilla.components.feature.readerview.view.ReaderViewControlsView
+import mozilla.components.lib.state.ext.flowScoped
+import mozilla.components.support.base.feature.LifecycleAwareFeature
+import mozilla.components.support.base.feature.UserInteractionHandler
+import mozilla.components.support.base.log.logger.Logger
+import mozilla.components.support.ktx.kotlinx.coroutines.flow.filterChanged
+import mozilla.components.support.webextensions.WebExtensionController
+import org.json.JSONObject
+import java.lang.ref.WeakReference
+import java.net.URLEncoder
+import java.util.Locale
+import java.util.UUID
+
+typealias onReaderViewStatusChange = (available: Boolean, active: Boolean) -> Unit
+typealias UUIDCreator = () -> String
+
+/**
+ * Feature implementation that provides a reader view for the selected
+ * session, based on a web extension.
+ *
+ * @property context a reference to the context.
+ * @property engine a reference to the application's browser engine.
+ * @property store a reference to the application's [BrowserStore].
+ * @param controlsView the view to use to display reader mode controls.
+ * @property onReaderViewStatusChange a callback invoked to indicate whether
+ * or not reader view is available and active for the page loaded by the
+ * currently selected session. The callback will be invoked when a page is
+ * loaded or refreshed, on any navigation (back or forward), and when the
+ * selected session changes.
+ */
+class ReaderViewFeature(
+    private val context: Context,
+    private val engine: Engine,
+    private val store: BrowserStore,
+    controlsView: ReaderViewControlsView,
+    private val createUUID: UUIDCreator = { UUID.randomUUID().toString() },
+    private val onReaderViewStatusChange: onReaderViewStatusChange = { _, _ -> Unit },
+) : LifecycleAwareFeature, UserInteractionHandler {
+
+    private var scope: CoroutineScope? = null
+
+    @VisibleForTesting var readerBaseUrl: String? = null
+
+    @VisibleForTesting
+    // This is an internal var to make it mutable for unit testing purposes only
+    internal var extensionController = WebExtensionController(
+        READER_VIEW_EXTENSION_ID,
+        READER_VIEW_EXTENSION_URL,
+        READER_VIEW_CONTENT_PORT,
+    )
+
+    @VisibleForTesting
+    internal val config = ReaderViewConfig(context) { message ->
+        val engineSession = store.state.selectedTab?.engineState?.engineSession
+        extensionController.sendContentMessage(message, engineSession, READER_VIEW_ACTIVE_CONTENT_PORT)
+    }
+
+    private val controlsPresenter = ReaderViewControlsPresenter(controlsView, config)
+    private val controlsInteractor = ReaderViewControlsInteractor(controlsView, config)
+
+    enum class FontType(val value: String) { SANSSERIF("sans-serif"), SERIF("serif") }
+    enum class ColorScheme { LIGHT, SEPIA, DARK }
+
+    override fun start() {
+        ensureExtensionInstalled()
+
+        scope = store.flowScoped { flow ->
+            flow.mapNotNull { state -> state.tabs }
+                .filterChanged {
+                    it.readerState
+                }
+                .collect { tab ->
+                    if (tab.readerState.connectRequired) {
+                        connectReaderViewContentScript(tab)
+                    }
+                    if (tab.readerState.checkRequired) {
+                        checkReaderState(tab)
+                    }
+                    if (tab.id == store.state.selectedTabId) {
+                        maybeNotifyReaderStatusChange(tab.readerState.readerable, tab.readerState.active)
+                    }
+                }
+        }
+
+        controlsInteractor.start()
+    }
+
+    override fun stop() {
+        scope?.cancel()
+        controlsInteractor.stop()
+    }
+
+    override fun onBackPressed(): Boolean {
+        store.state.selectedTab?.let {
+            if (it.readerState.active) {
+                if (controlsPresenter.areControlsVisible()) {
+                    hideControls()
+                } else {
+                    hideReaderView()
+                }
+                return true
+            }
+        }
+        return false
+    }
+
+    /**
+     * Shows the reader view UI.
+     */
+    fun showReaderView(session: TabSessionState? = store.state.selectedTab) {
+        session?.let {
+            if (!it.readerState.active) {
+                val id = createUUID()
+                extensionController.sendContentMessage(
+                    createCachePageMessage(id),
+                    it.engineState.engineSession,
+                    READER_VIEW_CONTENT_PORT,
+                )
+
+                val readerUrl = extensionController.createReaderUrl(it.content.url, id) ?: run {
+                    Logger.error("FeatureReaderView unable to create ReaderUrl.")
+                    return@let
+                }
+
+                store.dispatch(EngineAction.LoadUrlAction(it.id, readerUrl))
+                store.dispatch(ReaderAction.UpdateReaderActiveAction(it.id, true))
+            }
+        }
+    }
+
+    /**
+     * Hides the reader view UI.
+     */
+    fun hideReaderView(session: TabSessionState? = store.state.selectedTab) {
+        session?.let { it ->
+            if (it.readerState.active) {
+                store.dispatch(ReaderAction.UpdateReaderActiveAction(it.id, false))
+                store.dispatch(ReaderAction.UpdateReaderableAction(it.id, false))
+                store.dispatch(ReaderAction.ClearReaderActiveUrlAction(it.id))
+                if (it.content.canGoBack) {
+                    it.engineState.engineSession?.goBack(false)
+                } else {
+                    extensionController.sendContentMessage(
+                        createHideReaderMessage(),
+                        it.engineState.engineSession,
+                        READER_VIEW_ACTIVE_CONTENT_PORT,
+                    )
+                }
+            }
+        }
+    }
+
+    /**
+     * Shows the reader view appearance controls.
+     */
+    fun showControls() {
+        controlsPresenter.show()
+    }
+
+    /**
+     * Hides the reader view appearance controls.
+     */
+    fun hideControls() {
+        controlsPresenter.hide()
+    }
+
+    @VisibleForTesting
+    internal fun checkReaderState(session: TabSessionState? = store.state.selectedTab) {
+        session?.engineState?.engineSession?.let { engineSession ->
+            val message = createCheckReaderStateMessage()
+            if (extensionController.portConnected(engineSession, READER_VIEW_CONTENT_PORT)) {
+                extensionController.sendContentMessage(message, engineSession, READER_VIEW_CONTENT_PORT)
+            }
+            if (extensionController.portConnected(engineSession, READER_VIEW_ACTIVE_CONTENT_PORT)) {
+                extensionController.sendContentMessage(message, engineSession, READER_VIEW_ACTIVE_CONTENT_PORT)
+            }
+            store.dispatch(ReaderAction.UpdateReaderableCheckRequiredAction(session.id, false))
+        }
+    }
+
+    @VisibleForTesting
+    internal fun connectReaderViewContentScript(session: TabSessionState? = store.state.selectedTab) {
+        session?.engineState?.engineSession?.let { engineSession ->
+            extensionController.registerContentMessageHandler(
+                engineSession,
+                ActiveReaderViewContentMessageHandler(store, session.id, WeakReference(config)),
+                READER_VIEW_ACTIVE_CONTENT_PORT,
+            )
+            extensionController.registerContentMessageHandler(
+                engineSession,
+                ReaderViewContentMessageHandler(store, session.id),
+                READER_VIEW_CONTENT_PORT,
+            )
+            store.dispatch(ReaderAction.UpdateReaderConnectRequiredAction(session.id, false))
+        }
+    }
+
+    private var lastNotified: Pair<Boolean, Boolean>? = null
+
+    @VisibleForTesting
+    internal fun maybeNotifyReaderStatusChange(readerable: Boolean = false, active: Boolean = false) {
+        // Make sure we only notify the UI if needed (an actual change happened) to prevent
+        // it from unnecessarily invalidating toolbar/menu items.
+        if (lastNotified == null || lastNotified != Pair(readerable, active)) {
+            onReaderViewStatusChange(readerable, active)
+            lastNotified = Pair(readerable, active)
+        }
+    }
+
+    private fun ensureExtensionInstalled() {
+        val feature = WeakReference(this)
+        extensionController.install(
+            engine,
+            onSuccess = {
+                it.getMetadata()?.run {
+                    readerBaseUrl = baseUrl
+                } ?: run {
+                    Logger.error("ReaderView extension missing Metadata")
+                }
+
+                feature.get()?.connectReaderViewContentScript()
+            },
+        )
+    }
+
+    /**
+     * Handles content messages from regular pages.
+     */
+    private open class ReaderViewContentMessageHandler(
+        protected val store: BrowserStore,
+        protected val sessionId: String,
+    ) : MessageHandler {
+        override fun onPortConnected(port: Port) {
+            port.postMessage(createCheckReaderStateMessage())
+        }
+
+        override fun onPortMessage(message: Any, port: Port) {
+            if (message is JSONObject) {
+                val readerable = message.optBoolean(READERABLE_RESPONSE_MESSAGE_KEY, false)
+                store.dispatch(ReaderAction.UpdateReaderableAction(sessionId, readerable))
+            }
+        }
+    }
+
+    /**
+     * Handles content messages from active reader pages.
+     */
+    private class ActiveReaderViewContentMessageHandler(
+        store: BrowserStore,
+        sessionId: String,
+        // This needs to be a weak reference because the engine session this message handler will be
+        // attached to has a longer lifespan than the feature instance i.e. a tab can remain open,
+        // but we don't want to prevent the feature (and therefore its context/fragment) from
+        // being garbage collected. The config has references to both the context and feature.
+        private val config: WeakReference<ReaderViewConfig>,
+    ) : ReaderViewContentMessageHandler(store, sessionId) {
+
+        override fun onPortMessage(message: Any, port: Port) {
+            super.onPortMessage(message, port)
+
+            if (message is JSONObject) {
+                val baseUrl = message.getString(BASE_URL_RESPONSE_MESSAGE_KEY)
+                store.dispatch(ReaderAction.UpdateReaderBaseUrlAction(sessionId, baseUrl))
+
+                port.postMessage(createShowReaderMessage(config.get(), store.state.selectedTab?.readerState?.scrollY))
+
+                val activeUrl = message.getString(ACTIVE_URL_RESPONSE_MESSAGE_KEY)
+                store.dispatch(ReaderAction.UpdateReaderActiveUrlAction(sessionId, activeUrl))
+            }
+        }
+    }
+
+    private fun WebExtensionController.createReaderUrl(url: String, id: String): String? {
+        val colorScheme = config.colorScheme.name.lowercase(Locale.ROOT)
+        // Encode the original page url, otherwise when the readerview page will try to
+        // parse the url and retrieve the readerview url params (ir and colorScheme)
+        // the parser may get confused because the original webpage url being interpolated
+        // may also include its own search params non-escaped (See Bug 1860490).
+        val encodedUrl = URLEncoder.encode(url, "UTF-8")
+        return readerBaseUrl?.let { it + "readerview.html?url=$encodedUrl&id=$id&colorScheme=$colorScheme" }
+    }
+
+    companion object {
+        private val logger = Logger("ReaderView")
+
+        internal const val READER_VIEW_EXTENSION_ID = "readerview@mozac.org"
+
+        // Name of the port connected to all pages for checking whether or not
+        // a page is readerable (see readerview_content.js).
+        internal const val READER_VIEW_CONTENT_PORT = "mozacReaderview"
+
+        // Name of the port connected to active reader pages for updating
+        // appearance configuration (see readerview.js).
+        internal const val READER_VIEW_ACTIVE_CONTENT_PORT = "mozacReaderviewActive"
+        internal const val READER_VIEW_EXTENSION_URL = "resource://android/assets/extensions/readerview/"
+
+        // Constants for building messages sent to the web extension:
+        // Change the font type: {"action": "setFontType", "value": "sans-serif"}
+        // Show reader view: {"action": "show", "value": {"fontSize": 3, "fontType": "serif", "colorScheme": "dark"}}
+        internal const val ACTION_MESSAGE_KEY = "action"
+        internal const val ACTION_CACHE_PAGE = "cachePage"
+        internal const val ACTION_SHOW = "show"
+        internal const val ACTION_HIDE = "hide"
+        internal const val ACTION_CHECK_READER_STATE = "checkReaderState"
+        internal const val ACTION_SET_COLOR_SCHEME = "setColorScheme"
+        internal const val ACTION_CHANGE_FONT_SIZE = "changeFontSize"
+        internal const val ACTION_SET_FONT_TYPE = "setFontType"
+        internal const val ACTION_VALUE = "value"
+        internal const val ACTION_VALUE_SHOW_FONT_SIZE = "fontSize"
+        internal const val ACTION_VALUE_SHOW_FONT_TYPE = "fontType"
+        internal const val ACTION_VALUE_SHOW_COLOR_SCHEME = "colorScheme"
+        internal const val ACTION_VALUE_SCROLLY = "scrollY"
+        internal const val ACTION_VALUE_ID = "id"
+        internal const val READERABLE_RESPONSE_MESSAGE_KEY = "readerable"
+        internal const val BASE_URL_RESPONSE_MESSAGE_KEY = "baseUrl"
+        internal const val ACTIVE_URL_RESPONSE_MESSAGE_KEY = "activeUrl"
+
+        // Constants for storing the reader mode config in shared preferences
+        internal const val SHARED_PREF_NAME = "mozac_feature_reader_view"
+        internal const val COLOR_SCHEME_KEY = "mozac-readerview-colorscheme"
+        internal const val FONT_TYPE_KEY = "mozac-readerview-fonttype"
+        internal const val FONT_SIZE_KEY = "mozac-readerview-fontsize"
+        internal const val FONT_SIZE_DEFAULT = 3
+
+        internal fun createCheckReaderStateMessage(): JSONObject {
+            return JSONObject().put(ACTION_MESSAGE_KEY, ACTION_CHECK_READER_STATE)
+        }
+
+        internal fun createCachePageMessage(id: String): JSONObject {
+            return JSONObject()
+                .put(ACTION_MESSAGE_KEY, ACTION_CACHE_PAGE)
+                .put(ACTION_VALUE_ID, id)
+        }
+
+        internal fun createShowReaderMessage(config: ReaderViewConfig?, scrollY: Int? = null): JSONObject {
+            if (config == null) {
+                logger.warn("No config provided. Falling back to default values.")
+            }
+
+            val fontSize = config?.fontSize ?: FONT_SIZE_DEFAULT
+            val fontType = config?.fontType ?: FontType.SERIF
+            val colorScheme = config?.colorScheme ?: ColorScheme.LIGHT
+            val configJson = JSONObject()
+                .put(ACTION_VALUE_SHOW_FONT_SIZE, fontSize)
+                .put(ACTION_VALUE_SHOW_FONT_TYPE, fontType.value.lowercase(Locale.ROOT))
+                .put(ACTION_VALUE_SHOW_COLOR_SCHEME, colorScheme.name.lowercase(Locale.ROOT))
+            if (scrollY != null) {
+                configJson.put(ACTION_VALUE_SCROLLY, scrollY)
+            }
+            return JSONObject()
+                .put(ACTION_MESSAGE_KEY, ACTION_SHOW)
+                .put(ACTION_VALUE, configJson)
+        }
+
+        internal fun createHideReaderMessage(): JSONObject {
+            return JSONObject().put(ACTION_MESSAGE_KEY, ACTION_HIDE)
+        }
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/ReaderViewMiddleware.kt b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/ReaderViewMiddleware.kt
new file mode 100644
index 0000000000..b5d602553d
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/ReaderViewMiddleware.kt
@@ -0,0 +1,134 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview
+
+import androidx.annotation.VisibleForTesting
+import mozilla.components.browser.state.action.BrowserAction
+import mozilla.components.browser.state.action.ContentAction
+import mozilla.components.browser.state.action.EngineAction
+import mozilla.components.browser.state.action.ReaderAction
+import mozilla.components.browser.state.action.TabListAction
+import mozilla.components.browser.state.selector.findTab
+import mozilla.components.browser.state.state.BrowserState
+import mozilla.components.browser.state.state.TabSessionState
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.READER_VIEW_CONTENT_PORT
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.READER_VIEW_EXTENSION_ID
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.READER_VIEW_EXTENSION_URL
+import mozilla.components.lib.state.Middleware
+import mozilla.components.lib.state.MiddlewareContext
+import mozilla.components.support.webextensions.WebExtensionController
+
+/**
+ * [Middleware] implementation for translating [BrowserAction]s to
+ * [ReaderAction]s (e.g. if the URL is updated a new "readerable"
+ * check should be executed.)
+ */
+class ReaderViewMiddleware : Middleware<BrowserState, BrowserAction> {
+
+    @VisibleForTesting
+    internal var extensionController = WebExtensionController(
+        READER_VIEW_EXTENSION_ID,
+        READER_VIEW_EXTENSION_URL,
+        READER_VIEW_CONTENT_PORT,
+    )
+
+    override fun invoke(
+        context: MiddlewareContext<BrowserState, BrowserAction>,
+        next: (BrowserAction) -> Unit,
+        action: BrowserAction,
+    ) {
+        if (preProcess(context, action)) {
+            next(action)
+            postProcess(context, action)
+        }
+    }
+
+    /**
+     * Processes the action before it is dispatched to the store.
+     *
+     * @param context a reference to the [MiddlewareContext].
+     * @param action the action to process.
+     * @return true if the original action should be processed, otherwise false.
+     */
+    private fun preProcess(
+        context: MiddlewareContext<BrowserState, BrowserAction>,
+        action: BrowserAction,
+    ): Boolean {
+        return when (action) {
+            // We want to bind the feature instance to the lifecycle of the browser
+            // fragment. So it won't necessarily be active when a tab is removed
+            // (e.g. via a tabs tray fragment). In order to disconnect the port as
+            // early as possible it's best to do it here directly.
+            is EngineAction.UnlinkEngineSessionAction -> {
+                context.state.findTab(action.tabId)?.engineState?.engineSession?.let {
+                    extensionController.disconnectPort(it, READER_VIEW_EXTENSION_ID)
+                }
+                true
+            }
+            is ContentAction.UpdateUrlAction -> {
+                // Activate reader view when navigating to a reader page and deactivate it
+                // when navigating away. In addition, we want to mask moz-extension://
+                // URLs in the toolbar. So, if we detect the URL is coming from our
+                // extension we show the original URL instead. This is needed until
+                // we have a solution for:
+                // https://bugzilla.mozilla.org/show_bug.cgi?id=1550144
+                // https://bugzilla.mozilla.org/show_bug.cgi?id=1322304
+                // https://github.com/mozilla-mobile/android-components/issues/2879
+                val tab = context.state.findTab(action.sessionId)
+                if (isReaderUrl(tab, action.url)) {
+                    val urlReplaced = tab?.readerState?.activeUrl?.let { activeUrl ->
+                        context.dispatch(ContentAction.UpdateUrlAction(action.sessionId, activeUrl))
+                        true
+                    } ?: false
+                    context.dispatch(ReaderAction.UpdateReaderActiveAction(action.sessionId, true))
+                    !urlReplaced
+                } else {
+                    if (action.url != tab?.readerState?.activeUrl) {
+                        context.dispatch(ReaderAction.UpdateReaderActiveAction(action.sessionId, false))
+                        context.dispatch(ReaderAction.UpdateReaderableAction(action.sessionId, false))
+                        context.dispatch(ReaderAction.UpdateReaderableCheckRequiredAction(action.sessionId, true))
+                        context.dispatch(ReaderAction.ClearReaderActiveUrlAction(action.sessionId))
+                    }
+                    true
+                }
+            }
+            else -> true
+        }
+    }
+
+    private fun postProcess(
+        context: MiddlewareContext<BrowserState, BrowserAction>,
+        action: BrowserAction,
+    ) {
+        when (action) {
+            is TabListAction.SelectTabAction -> {
+                context.dispatch(ReaderAction.UpdateReaderConnectRequiredAction(action.tabId, true))
+                context.dispatch(ReaderAction.UpdateReaderableAction(action.tabId, false))
+                context.dispatch(ReaderAction.UpdateReaderableCheckRequiredAction(action.tabId, true))
+            }
+            is EngineAction.LinkEngineSessionAction -> {
+                context.dispatch(ReaderAction.UpdateReaderConnectRequiredAction(action.tabId, true))
+            }
+            is ReaderAction.UpdateReaderActiveUrlAction -> {
+                // When a tab is restored, the reader page will connect, but we won't get a
+                // UpdateUrlAction. We still want to mask the moz-extension:// URL though
+                // so we update the URL here. See comment on handling UpdateUrlAction.
+                val tab = context.state.findTab(action.tabId)
+                val url = tab?.content?.url
+                if (url != null && isReaderUrl(tab, url)) {
+                    context.dispatch(ContentAction.UpdateUrlAction(tab.id, url))
+                }
+            }
+            else -> {
+                // no-op
+            }
+        }
+    }
+
+    private fun isReaderUrl(tab: TabSessionState?, url: String): Boolean {
+        val readerViewBaseUrl = tab?.readerState?.baseUrl
+        return readerViewBaseUrl != null && url.startsWith(readerViewBaseUrl)
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/internal/ReaderViewConfig.kt b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/internal/ReaderViewConfig.kt
new file mode 100644
index 0000000000..561d63e0e0
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/internal/ReaderViewConfig.kt
@@ -0,0 +1,108 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview.internal
+
+import android.content.Context
+import android.content.Context.MODE_PRIVATE
+import android.content.res.Configuration
+import mozilla.components.feature.readerview.ReaderViewFeature
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.ACTION_CHANGE_FONT_SIZE
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.ACTION_MESSAGE_KEY
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.ACTION_SET_FONT_TYPE
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.ACTION_VALUE
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.COLOR_SCHEME_KEY
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.FONT_SIZE_DEFAULT
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.FONT_SIZE_KEY
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.FONT_TYPE_KEY
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.SHARED_PREF_NAME
+import org.json.JSONObject
+
+/**
+ * Stores the user configuration for reader view in shared prefs.
+ * All values are initialized lazily and cached.
+ * @param context Used to lazily obtain shared preferences and to check dark mode status.
+ * @param sendConfigMessage If the config changes, this method will be invoked
+ * with a JSON object which should be sent to the content script so the new
+ * config can be applied.
+ */
+internal class ReaderViewConfig(
+    context: Context,
+    private val sendConfigMessage: (JSONObject) -> Unit,
+) {
+
+    private val prefs by lazy { context.getSharedPreferences(SHARED_PREF_NAME, MODE_PRIVATE) }
+    private val resources = context.resources
+    private var colorSchemeCache: ReaderViewFeature.ColorScheme? = null
+    private var fontTypeCache: ReaderViewFeature.FontType? = null
+    private var fontSizeCache: Int? = null
+
+    var colorScheme: ReaderViewFeature.ColorScheme
+        get() {
+            if (colorSchemeCache == null) {
+                // Default to a dark theme if either the system or local dark theme is active
+                val defaultColor = if (isNightMode()) {
+                    ReaderViewFeature.ColorScheme.DARK
+                } else {
+                    ReaderViewFeature.ColorScheme.LIGHT
+                }
+                colorSchemeCache = getEnumFromPrefs(COLOR_SCHEME_KEY, defaultColor)
+            }
+            return colorSchemeCache!!
+        }
+        set(value) {
+            if (colorSchemeCache != value) {
+                colorSchemeCache = value
+                prefs.edit().putString(COLOR_SCHEME_KEY, value.name).apply()
+                sendMessage(ReaderViewFeature.ACTION_SET_COLOR_SCHEME) { put(ACTION_VALUE, value.name) }
+            }
+        }
+
+    var fontType: ReaderViewFeature.FontType
+        get() {
+            if (fontTypeCache == null) {
+                fontTypeCache = getEnumFromPrefs(FONT_TYPE_KEY, ReaderViewFeature.FontType.SERIF)
+            }
+            return fontTypeCache!!
+        }
+        set(value) {
+            if (fontTypeCache != value) {
+                fontTypeCache = value
+                prefs.edit().putString(FONT_TYPE_KEY, value.name).apply()
+                sendMessage(ACTION_SET_FONT_TYPE) { put(ACTION_VALUE, value.value) }
+            }
+        }
+
+    var fontSize: Int
+        get() {
+            if (fontSizeCache == null) {
+                fontSizeCache = prefs.getInt(FONT_SIZE_KEY, FONT_SIZE_DEFAULT)
+            }
+            return fontSizeCache!!
+        }
+        set(value) {
+            if (fontSizeCache != value) {
+                val diff = value - fontSize
+                fontSizeCache = value
+                prefs.edit().putInt(FONT_SIZE_KEY, value).apply()
+                sendMessage(ACTION_CHANGE_FONT_SIZE) { put(ACTION_VALUE, diff) }
+            }
+        }
+
+    private inline fun <reified T : Enum<T>> getEnumFromPrefs(key: String, default: T): T {
+        val enumName = prefs.getString(key, default.name) ?: default.name
+        return enumValueOf(enumName)
+    }
+
+    private fun isNightMode(): Boolean {
+        val darkFlag = resources?.configuration?.uiMode?.and(Configuration.UI_MODE_NIGHT_MASK)
+        return darkFlag == Configuration.UI_MODE_NIGHT_YES
+    }
+
+    private inline fun sendMessage(action: String, crossinline builder: JSONObject.() -> Unit) {
+        val message = JSONObject().put(ACTION_MESSAGE_KEY, action)
+        builder(message)
+        sendConfigMessage(message)
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/internal/ReaderViewControlsInteractor.kt b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/internal/ReaderViewControlsInteractor.kt
new file mode 100644
index 0000000000..59b0f0d3d5
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/internal/ReaderViewControlsInteractor.kt
@@ -0,0 +1,51 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview.internal
+
+import mozilla.components.feature.readerview.ReaderViewFeature
+import mozilla.components.feature.readerview.ReaderViewFeature.ColorScheme
+import mozilla.components.feature.readerview.ReaderViewFeature.FontType
+import mozilla.components.feature.readerview.view.MAX_TEXT_SIZE
+import mozilla.components.feature.readerview.view.MIN_TEXT_SIZE
+import mozilla.components.feature.readerview.view.ReaderViewControlsView
+
+/**
+ * Interactor that implements [ReaderViewControlsView.Listener] and notifies the feature about actions the user
+ * performed via the [ReaderViewFeature.Config] (e.g. "font changed").
+ */
+internal class ReaderViewControlsInteractor(
+    private val view: ReaderViewControlsView,
+    private val config: ReaderViewConfig,
+) : ReaderViewControlsView.Listener {
+    fun start() {
+        view.listener = this
+    }
+
+    fun stop() {
+        view.listener = null
+    }
+
+    override fun onFontChanged(font: FontType) {
+        config.fontType = font
+    }
+
+    override fun onFontSizeIncreased(): Int {
+        if (config.fontSize < MAX_TEXT_SIZE) {
+            config.fontSize += 1
+        }
+        return config.fontSize
+    }
+
+    override fun onFontSizeDecreased(): Int {
+        if (config.fontSize > MIN_TEXT_SIZE) {
+            config.fontSize -= 1
+        }
+        return config.fontSize
+    }
+
+    override fun onColorSchemeChanged(scheme: ColorScheme) {
+        config.colorScheme = scheme
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/internal/ReaderViewControlsPresenter.kt b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/internal/ReaderViewControlsPresenter.kt
new file mode 100644
index 0000000000..89fa48fc44
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/internal/ReaderViewControlsPresenter.kt
@@ -0,0 +1,43 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview.internal
+
+import androidx.core.view.isVisible
+import mozilla.components.feature.readerview.view.ReaderViewControlsView
+
+/**
+ * Presenter implementation that will update the view whenever the feature is started.
+ */
+internal class ReaderViewControlsPresenter(
+    private val view: ReaderViewControlsView,
+    private val config: ReaderViewConfig,
+) {
+    /**
+     * Sets the initial state of the ReaderView controls and makes the controls visible.
+     */
+    fun show() {
+        view.apply {
+            tryInflate()
+            setColorScheme(config.colorScheme)
+            setFont(config.fontType)
+            setFontSize(config.fontSize)
+            showControls()
+        }
+    }
+
+    /**
+     * Checks whether or not the ReaderView controls are visible.
+     */
+    fun areControlsVisible(): Boolean {
+        return view.asView().isVisible
+    }
+
+    /**
+     * Hides the controls.
+     */
+    fun hide() {
+        view.hideControls()
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/view/ReaderViewControlsBar.kt b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/view/ReaderViewControlsBar.kt
new file mode 100644
index 0000000000..3071b58323
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/view/ReaderViewControlsBar.kt
@@ -0,0 +1,174 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview.view
+
+import android.content.Context
+import android.graphics.Rect
+import android.util.AttributeSet
+import android.view.View
+import android.widget.RadioGroup
+import androidx.annotation.IdRes
+import androidx.appcompat.widget.AppCompatButton
+import androidx.constraintlayout.widget.ConstraintLayout
+import mozilla.components.feature.readerview.R
+import mozilla.components.feature.readerview.ReaderViewFeature.ColorScheme
+import mozilla.components.feature.readerview.ReaderViewFeature.FontType
+
+const val MAX_TEXT_SIZE = 9
+const val MIN_TEXT_SIZE = 1
+
+/**
+ * A customizable ReaderView control bar implementing [ReaderViewControlsView].
+ */
+class ReaderViewControlsBar @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = 0,
+) : ConstraintLayout(context, attrs, defStyleAttr), ReaderViewControlsView {
+
+    override var listener: ReaderViewControlsView.Listener? = null
+
+    private lateinit var fontIncrementButton: AppCompatButton
+    private lateinit var fontDecrementButton: AppCompatButton
+    private lateinit var fontGroup: RadioGroup
+    private lateinit var colorSchemeGroup: RadioGroup
+
+    private var view: View? = null
+
+    init {
+        isFocusableInTouchMode = true
+        isClickable = true
+    }
+
+    /**
+     * Sets the font type of the current and future ReaderView sessions.
+     *
+     * @param font The applicable font types available.
+     */
+    override fun setFont(font: FontType) {
+        val selected = when (font) {
+            FontType.SERIF -> R.id.mozac_feature_readerview_font_serif
+            FontType.SANSSERIF -> R.id.mozac_feature_readerview_font_sans_serif
+        }
+        fontGroup.check(selected)
+    }
+
+    /**
+     * Sets the font size of the current and future ReaderView sessions.
+     *
+     * Note: The readerview.js implementation under the hood scales the entire page's contents and not just
+     * the text size.
+     *
+     * @param size An integer value in the range [MIN_TEXT_SIZE] to [MAX_TEXT_SIZE].
+     */
+    override fun setFontSize(size: Int) {
+        val (incrementState, decrementState) = when {
+            size <= MIN_TEXT_SIZE -> {
+                Pair(first = true, second = false)
+            }
+            size >= MAX_TEXT_SIZE -> {
+                Pair(first = false, second = true)
+            }
+            else -> {
+                Pair(first = true, second = true)
+            }
+        }
+        fontIncrementButton.isEnabled = incrementState
+        fontDecrementButton.isEnabled = decrementState
+    }
+
+    /**
+     * Sets the color scheme of the current and future ReaderView sessions.
+     *
+     * @param scheme The applicable colour schemes available.
+     */
+    override fun setColorScheme(scheme: ColorScheme) {
+        val selected = when (scheme) {
+            ColorScheme.DARK -> R.id.mozac_feature_readerview_color_dark
+            ColorScheme.SEPIA -> R.id.mozac_feature_readerview_color_sepia
+            ColorScheme.LIGHT -> R.id.mozac_feature_readerview_color_light
+        }
+
+        colorSchemeGroup.check(selected)
+    }
+
+    /**
+     * Updates visibility to [View.VISIBLE] and requests focus for the UI controls.
+     */
+    override fun showControls() {
+        visibility = View.VISIBLE
+        requestFocus()
+    }
+
+    /**
+     * Updates visibility to [View.GONE] of the UI controls.
+     */
+    override fun hideControls() {
+        visibility = View.GONE
+    }
+
+    /**
+     * Tries to inflate the view if needed.
+     *
+     * See: https://github.com/mozilla-mobile/android-components/issues/5491
+     *
+     * @return true if the inflation was completed, false if the view was already inflated.
+     */
+    override fun tryInflate(): Boolean {
+        return if (view == null) {
+            view = View.inflate(context, R.layout.mozac_feature_readerview_view, this)
+            bindViews()
+            true
+        } else {
+            false
+        }
+    }
+
+    override fun onFocusChanged(gainFocus: Boolean, direction: Int, previouslyFocusedRect: Rect?) {
+        if (!gainFocus) {
+            hideControls()
+        }
+        super.onFocusChanged(gainFocus, direction, previouslyFocusedRect)
+    }
+
+    @Suppress("ComplexMethod")
+    private fun bindViews() {
+        fontGroup = applyCheckedListener(R.id.mozac_feature_readerview_font_group) { checkedId ->
+            val fontType = when (checkedId) {
+                R.id.mozac_feature_readerview_font_sans_serif -> FontType.SANSSERIF
+                R.id.mozac_feature_readerview_font_serif -> FontType.SERIF
+                else -> FontType.SERIF
+            }
+            listener?.onFontChanged(fontType)
+        }
+        colorSchemeGroup = applyCheckedListener(R.id.mozac_feature_readerview_color_scheme_group) { checkedId ->
+            val colorSchemeChoice = when (checkedId) {
+                R.id.mozac_feature_readerview_color_dark -> ColorScheme.DARK
+                R.id.mozac_feature_readerview_color_sepia -> ColorScheme.SEPIA
+                R.id.mozac_feature_readerview_color_light -> ColorScheme.LIGHT
+                else -> ColorScheme.DARK
+            }
+            listener?.onColorSchemeChanged(colorSchemeChoice)
+        }
+        fontIncrementButton = applyClickListener(R.id.mozac_feature_readerview_font_size_increase) {
+            listener?.onFontSizeIncreased()?.let { setFontSize(it) }
+        }
+        fontDecrementButton = applyClickListener(R.id.mozac_feature_readerview_font_size_decrease) {
+            listener?.onFontSizeDecreased()?.let { setFontSize(it) }
+        }
+    }
+
+    private inline fun applyClickListener(@IdRes id: Int, crossinline block: () -> Unit): AppCompatButton {
+        return findViewById<AppCompatButton>(id).apply {
+            setOnClickListener { block() }
+        }
+    }
+
+    private inline fun applyCheckedListener(@IdRes id: Int, crossinline block: (Int) -> Unit): RadioGroup {
+        return findViewById<RadioGroup>(id).apply {
+            setOnCheckedChangeListener { _, checkedId -> block(checkedId) }
+        }
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/view/ReaderViewControlsView.kt b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/view/ReaderViewControlsView.kt
new file mode 100644
index 0000000000..566566e51f
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/view/ReaderViewControlsView.kt
@@ -0,0 +1,63 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview.view
+
+import android.view.View
+import mozilla.components.feature.readerview.ReaderViewFeature.ColorScheme
+import mozilla.components.feature.readerview.ReaderViewFeature.FontType
+
+/**
+ * An interface for views that can display ReaderView appearance controls (e.g. font size, font type).
+ */
+interface ReaderViewControlsView {
+
+    var listener: Listener?
+
+    /**
+     * Sets the selected font option.
+     */
+    fun setFont(font: FontType)
+
+    /**
+     * Sets the selected font size.
+     */
+    fun setFontSize(size: Int)
+
+    /**
+     * Sets the selected color scheme.
+     */
+    fun setColorScheme(scheme: ColorScheme)
+
+    /**
+     * Makes the UI controls visible and requests focus.
+     */
+    fun showControls()
+
+    /**
+     * Makes the UI controls invisible.
+     */
+    fun hideControls()
+
+    /**
+     * Casts this [ReaderViewControlsView] interface to an actual Android [View] object.
+     */
+    fun asView(): View = (this as View)
+
+    /**
+     * Tries to inflate the view if needed.
+     *
+     * See: https://github.com/mozilla-mobile/android-components/issues/5491
+     *
+     * @return true if the inflation was completed, false if the view was already inflated.
+     */
+    fun tryInflate(): Boolean
+
+    interface Listener {
+        fun onFontChanged(font: FontType)
+        fun onFontSizeIncreased(): Int
+        fun onFontSizeDecreased(): Int
+        fun onColorSchemeChanged(scheme: ColorScheme)
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/fontsize_controls_text_selector.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/fontsize_controls_text_selector.xml
new file mode 100644
index 0000000000..0e7b7319fd
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/fontsize_controls_text_selector.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ This Source Code Form is subject to the terms of the Mozilla Public
+  ~  License, v. 2.0. If a copy of the MPL was not distributed with this
+  ~  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_enabled="true" android:color="@color/mozac_feature_readerview_text_color" />
+    <item android:state_enabled="false" android:color="@color/mozac_feature_readerview_text_color_disabled" />
+</selector>
\ No newline at end of file
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_color_scheme_dark_selector.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_color_scheme_dark_selector.xml
new file mode 100644
index 0000000000..0373fe5973
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_color_scheme_dark_selector.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ This Source Code Form is subject to the terms of the Mozilla Public
+  ~  License, v. 2.0. If a copy of the MPL was not distributed with this
+  ~  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_checked="true">
+        <shape>
+            <gradient android:angle="270" />
+            <stroke android:width="2dp" android:color="@color/mozac_feature_readerview_selected"/>
+            <corners android:radius="4dp" />
+            <solid android:color="@color/mozac_feature_readerview_dark_background"/>
+        </shape>
+    </item>
+    <item android:state_checked="false">
+        <shape>
+            <gradient android:angle="270" />
+            <corners android:radius="4dp" />
+            <solid android:color="@color/mozac_feature_readerview_dark_background"/>
+        </shape>
+    </item>
+</selector>
\ No newline at end of file
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_color_scheme_light_selector.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_color_scheme_light_selector.xml
new file mode 100644
index 0000000000..108205802d
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_color_scheme_light_selector.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ This Source Code Form is subject to the terms of the Mozilla Public
+  ~  License, v. 2.0. If a copy of the MPL was not distributed with this
+  ~  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  -->
+
+<!--
+  ~ This Source Code Form is subject to the terms of the Mozilla Public
+  ~  License, v. 2.0. If a copy of the MPL was not distributed with this
+  ~  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_checked="true">
+        <shape>
+            <gradient android:angle="270" />
+            <stroke android:width="2dp" android:color="@color/mozac_feature_readerview_selected"/>
+            <corners android:radius="4dp" />
+            <solid android:color="@color/mozac_feature_readerview_light_background"/>
+        </shape>
+    </item>
+    <item android:state_checked="false">
+        <shape>
+            <gradient android:angle="270" />
+            <corners android:radius="4dp" />
+            <solid android:color="@color/mozac_feature_readerview_light_background"/>
+        </shape>
+    </item>
+</selector>
\ No newline at end of file
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_color_scheme_sepia_selector.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_color_scheme_sepia_selector.xml
new file mode 100644
index 0000000000..a10f0c8e24
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_color_scheme_sepia_selector.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ This Source Code Form is subject to the terms of the Mozilla Public
+  ~  License, v. 2.0. If a copy of the MPL was not distributed with this
+  ~  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_checked="true">
+        <shape>
+            <gradient android:angle="270" />
+            <stroke android:width="2dp" android:color="@color/mozac_feature_readerview_selected"/>
+            <corners android:radius="4dp" />
+            <solid android:color="@color/mozac_feature_readerview_sepia_background"/>
+        </shape>
+    </item>
+    <item android:state_checked="false">
+        <shape>
+            <gradient android:angle="270" />
+            <corners android:radius="4dp" />
+            <solid android:color="@color/mozac_feature_readerview_sepia_background"/>
+        </shape>
+    </item>
+</selector>
\ No newline at end of file
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_selected_text_selector.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_selected_text_selector.xml
new file mode 100644
index 0000000000..16854bbbc6
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/drawable/radiobutton_selected_text_selector.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ This Source Code Form is subject to the terms of the Mozilla Public
+  ~  License, v. 2.0. If a copy of the MPL was not distributed with this
+  ~  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_checked="true" android:color="@color/mozac_feature_readerview_selected" />
+    <item android:state_checked="false" android:color="@color/mozac_feature_readerview_text_color" />
+</selector>
\ No newline at end of file
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/layout/mozac_feature_readerview_view.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/layout/mozac_feature_readerview_view.xml
new file mode 100644
index 0000000000..c42e91d263
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/layout/mozac_feature_readerview_view.xml
@@ -0,0 +1,155 @@
+<?xml version="1.0" encoding="utf-8"?><!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    tools:background="#ffffffff"
+    tools:parentTag="androidx.constraintlayout.widget.ConstraintLayout">
+
+    <RadioGroup
+        android:id="@+id/mozac_feature_readerview_font_group"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:minHeight="66dp"
+        android:orientation="horizontal"
+        android:gravity="center"
+        android:layout_marginEnd="8dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/mozac_feature_readerview_font_sans_serif"
+            style="@style/RadioButtonSelectedTextStyle"
+            android:text="@string/mozac_feature_readerview_sans_serif_font"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:fontFamily="sans-serif"
+            android:textAlignment="center"
+            android:contentDescription="@string/mozac_feature_readerview_sans_serif_font_desc"
+            android:layout_marginStart="8dp"
+            android:layout_marginEnd="8dp"
+            android:layout_weight="1"
+            app:autoSizeMaxTextSize="24sp"
+            app:autoSizeMinTextSize="14sp"
+            app:autoSizeStepGranularity="2sp"
+            app:autoSizeTextType="uniform" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/mozac_feature_readerview_font_serif"
+            style="@style/RadioButtonSelectedTextStyle"
+            android:text="@string/mozac_feature_readerview_serif_font"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:fontFamily="serif"
+            android:textAlignment="center"
+            android:contentDescription="@string/mozac_feature_readerview_serif_font_desc"
+            android:layout_marginEnd="8dp"
+            android:layout_marginStart="8dp"
+            android:layout_weight="1"
+            app:autoSizeMaxTextSize="24sp"
+            app:autoSizeMinTextSize="14sp"
+            app:autoSizeStepGranularity="2sp"
+            app:autoSizeTextType="uniform" />
+    </RadioGroup>
+
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/mozac_feature_readerview_font_size_decrease"
+        android:text="@string/mozac_feature_readerview_negative_sign"
+        android:textAlignment="center"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginEnd="8dp"
+        android:contentDescription="@string/mozac_feature_readerview_font_size_decrease_desc"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:textColor="@drawable/fontsize_controls_text_selector"
+        android:textSize="50sp"
+        android:fontFamily="sans-serif-light"
+        android:gravity="center"
+        app:layout_constraintEnd_toStartOf="@+id/mozac_feature_readerview_font_size_increase"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/mozac_feature_readerview_font_group" />
+
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/mozac_feature_readerview_font_size_increase"
+        android:text="@string/mozac_feature_readerview_positive_sign"
+        android:textAlignment="center"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="8dp"
+        android:layout_marginStart="8dp"
+        android:contentDescription="@string/mozac_feature_readerview_font_size_increase_desc"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:textColor="@drawable/fontsize_controls_text_selector"
+        android:textSize="50sp"
+        android:fontFamily="sans-serif-light"
+        android:gravity="center"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/mozac_feature_readerview_font_size_decrease"
+        app:layout_constraintTop_toBottomOf="@+id/mozac_feature_readerview_font_group" />
+
+    <RadioGroup
+        android:id="@+id/mozac_feature_readerview_color_scheme_group"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:gravity="center"
+        android:layout_marginStart="8dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginBottom="8dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/mozac_feature_readerview_font_size_increase">
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/mozac_feature_readerview_color_dark"
+            style="@style/RadioButtonSelectedBorderStyle"
+            android:background="@drawable/radiobutton_color_scheme_dark_selector"
+            android:text="@string/mozac_feature_readerview_dark"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:textColor="#F9F9FB"
+            android:layout_marginStart="8dp"
+            android:layout_marginEnd="8dp"
+            android:layout_weight="1"
+            android:textAlignment="center"
+            android:contentDescription="@string/mozac_feature_readerview_dark_color_scheme_desc" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/mozac_feature_readerview_color_sepia"
+            style="@style/RadioButtonSelectedBorderStyle"
+            android:background="@drawable/radiobutton_color_scheme_sepia_selector"
+            android:text="@string/mozac_feature_readerview_sephia"
+            android:layout_width="0dp"
+            android:textColor="#220033"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="8dp"
+            android:layout_marginStart="8dp"
+            android:layout_weight="1"
+            android:textAlignment="center"
+            android:contentDescription="@string/mozac_feature_readerview_sepia_color_scheme_desc" />
+
+        <androidx.appcompat.widget.AppCompatRadioButton
+            android:id="@+id/mozac_feature_readerview_color_light"
+            style="@style/RadioButtonSelectedBorderStyle"
+            android:background="@drawable/radiobutton_color_scheme_light_selector"
+            android:text="@string/mozac_feature_readerview_light"
+            android:textColor="#220033"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="8dp"
+            android:layout_marginEnd="8dp"
+            android:layout_weight="1"
+            android:textAlignment="center"
+            android:contentDescription="@string/mozac_feature_readerview_light_color_scheme_desc" />
+    </RadioGroup>
+</merge>
\ No newline at end of file
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-am/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-am/strings.xml
new file mode 100644
index 0000000000..bf76298450
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-am/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">ሳንሰ ሰሪፍ</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">ሳንሰ ሰሪፍ ቅርጸ-ቁምፊ</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">ሰሪፍ</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">ሰሪፍ ቅርጸ-ቁምፊ</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">የቅርጸ ቁምፊ መጠን ይቀንሳል</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">የቅርጸ ቁምፊ መጠን መጨመር</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">ጠቆር ያለ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">ጠቆር ያለ ቀለም ንድፍ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">ቀላ ያለ ቡናማ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">ቀላ ያለ ቡናማ ቀለም ንድፍ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">ፈካ ያለ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">ፈካ ያለ ቀለም ንድፍ</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-an/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-an/strings.xml
new file mode 100644
index 0000000000..9a65c91b12
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-an/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Fuent Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fuent Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Reducción de grandaria d’a fuent</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Aumento de grandaria d’a fuent</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Fosco</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Esquema de colors foscas</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Esquema de colors sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Claro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Esquema de colors claras</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ar/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ar/strings.xml
new file mode 100644
index 0000000000..491da6f725
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ar/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">غير مذيّل</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">خط غير مذيّل</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">مذيّل</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">خط مذيّل</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">إنقاص حجم الخط</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">زيادة حجم الخط</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">داكنة</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">مخطّط ألوان داكن</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">بني داكن</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">مخطّط ألوان بني داكن</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">فاتح</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">مخطّط ألوان فاتح</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ast/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ast/strings.xml
new file mode 100644
index 0000000000..26d8c7449e
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ast/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Fonte Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fonte Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Amenorgamientu del tamañu de la fonte</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Aumentu del tamañu de la fonte</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Escuridá</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Esquema de colores escuros</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Esquema de colores sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Claridá</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Esquema de colores claros</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-az/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-az/strings.xml
new file mode 100644
index 0000000000..8b9781fa9e
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-az/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif şrifti</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif şrifti</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Şrift ölçüsünü balacalaşdırma</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Şrift ölçüsünü böyütmə</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Tünd</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Tünd rəng sxemi</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepiya</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepiya rəng sxemi</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Açıq</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Açıq rəng sxemi</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-azb/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-azb/strings.xml
new file mode 100644
index 0000000000..6f89a979db
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-azb/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">سریف‌سیز</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">سریف‌سیز فونت</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">سریف‌لی</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">سریف‌لی فونت</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">فونت اؤلچوسونون آزالماسی</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">فونت اؤلچوسونون چوخالماسی</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">قارانلیق</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">قارانلیق رنگ طرحی</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">تورپاق</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">تورپاق رنگی طرحی</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">آچیق</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">آچیق رنگ طرحی</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-be/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-be/strings.xml
new file mode 100644
index 0000000000..41cd944353
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-be/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Без засечак</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Шрыфт без засечак</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">З засечкамі</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Шрыфт з засечкамі</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Паменшыць памер шрыфту</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Павялічыць памер шрыфту</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Цёмная</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Цёмная каляровая тэма</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Сэпія</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Каляровая тэма сепія</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Светлая</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Светлая каляровая тэма</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-bg/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-bg/strings.xml
new file mode 100644
index 0000000000..0796e1d644
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-bg/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Несерифен</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Несерифен шрифт</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Серифен</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Серифен шрифт</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Намаляване на размера на шрифта</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Увеличаване на размера на шрифта</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Тъмен</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Тъмна цветова схема</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Сепия</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Цветна схема на Сепия</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Светла</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Светла цветова схема</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-bn/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-bn/strings.xml
new file mode 100644
index 0000000000..01f8fc4796
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-bn/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif হরফ</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif হরফ</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">হরফের আকার হ্রাস করুন</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">হরফের আকার বৃদ্ধি করুন</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">গাঢ়</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">গাঢ় রঙের নকশা</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">কালচে-বাদামী রং</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">কালচে-বাদামী রঙের নকশা</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">হালকা</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">হালকা রঙের স্কিম</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-br/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-br/strings.xml
new file mode 100644
index 0000000000..e976c00d45
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-br/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Hep Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Nodrezh hep serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Nodrezh serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Digresk ment an nodrezh</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Kresk ment an nodrezh</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Teñval</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Livioù teñval</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Livioù sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Sklaer</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Livioù sklaer</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-bs/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-bs/strings.xml
new file mode 100644
index 0000000000..8d40e36b20
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-bs/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif font</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Smanjenje veličine fonta</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Povećanje veličine fonta</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Tamna</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Tamna shema boja</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia shema boja</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Svijetla</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Svijetla shema boja</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ca/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ca/strings.xml
new file mode 100644
index 0000000000..5c9c864d27
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ca/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Lletra Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Lletra Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Disminució de la mida de la lletra</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Augment de la mida de la lletra</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Fosc</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Esquema de colors foscos</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sèpia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Esquema de color sèpia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Clar</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Esquema de colors clars</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-cak/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-cak/strings.xml
new file mode 100644
index 0000000000..650ab70746
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-cak/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Fuente Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fuente Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Tich\'utinisäx rupalem tz\'ib\'</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Tinimirisäx rupalem tz\'ib\'</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Q\'equ\'m</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Q\'equ\'m rub\'onil chib\'äl</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepya</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepya rub\'onil chib\'äl</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Yuk\'unel</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">yuk\'unel rub\'onil chib\'äl</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ceb/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ceb/strings.xml
new file mode 100644
index 0000000000..7f18dfd315
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ceb/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif nga font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif nga font</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Pagamyon ang font</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Padakoon ang font</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Dark</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Dark nga color scheme</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia nga color scheme</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Light</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Light nga color scheme</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ckb/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ckb/strings.xml
new file mode 100644
index 0000000000..01fe719a52
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ckb/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">جۆرەپیتی Sans Serif </string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">جۆرەپیتی Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">کەمکردنەوەی قەبارەی جۆرەپیت(فۆنت)</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">گەورەکردنەوەی قەبارەی جۆرەپیت(فۆنت)</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">تاریک</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">شێوە ڕەنگی تاریک</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">خۆڵەمێشی تۆخ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">شێوە ڕەنگی خۆڵەمێشی تۆخ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">ڕوون</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">شێوە ڕەنگی ڕوون</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-co/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-co/strings.xml
new file mode 100644
index 0000000000..d16f5dde27
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-co/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Senza patta</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Grafia senza patta</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Patta (Serif)</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Grafia cù patta</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Riduzzione di a dimensione di a grafia</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Crescita di a dimensione di a grafia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Scuru</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Ghjocu di culori scuri</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Ghjocu di culori sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Chjaru</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Ghjocu di culori chjari</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-cs/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-cs/strings.xml
new file mode 100644
index 0000000000..ecf4cad954
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-cs/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Bezpatkové</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Bezpatkové písmo</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Patkové</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Patkové písmo</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Zmenšení velikosti písma</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Zvětšení velikosti písma</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Tmavé</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Tmavé barvy</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sépiové</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sépiové barvy</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Světlé</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Světlé barvy</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-cy/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-cy/strings.xml
new file mode 100644
index 0000000000..7252d7b1d1
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-cy/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Ffont Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Ffont serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Lleihad maint ffont</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Cynnydd maint ffont</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Tywyll</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Cynllun lliw tywyll</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Cynllun lliw tywyll</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Golau</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Cynllun lliw golau</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-da/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-da/strings.xml
new file mode 100644
index 0000000000..f933bc4565
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-da/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans-serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans-serif-font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif-font</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Gør skriftstørrelsen mindre</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Gør skriftstørrelsen større</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Mørk</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Mørkt farveskema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia farveskema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Lyst</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Lyst farveskema</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-de/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-de/strings.xml
new file mode 100644
index 0000000000..3f973f6ae1
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-de/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Serifenlose Schriftart</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serifenschriftart</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Schriftgröße verringern</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Schriftgröße erhöhen</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Dunkel</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Dunkles Farbschema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia-Farbschema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Hell</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Helles Farbschema</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-dsb/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-dsb/strings.xml
new file mode 100644
index 0000000000..84467bec78
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-dsb/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Pismo sans serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serifowe pismo</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Wjelikosć pisma pómjeńšyś</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Wjelikosć pisma pówětšyś</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Śamny</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Śamna barwowa šema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepija</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Barwowa šema Sepija</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Swětły</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Swětła barwowa šema</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-el/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-el/strings.xml
new file mode 100644
index 0000000000..abb18c3715
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-el/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Γραμματοσειρά Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Γραμματοσειρά Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Σμίκρυνση γραμματοσειράς</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Μεγέθυνση γραμματοσειράς</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Σκουρόχρωμο</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Σύνολο σκούρων χρωμάτων</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Σέπια</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Σύνολο χρωμάτων σέπια</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Ανοιχτό</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Σύνολο ανοιχτών χρωμάτων</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-en-rCA/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-en-rCA/strings.xml
new file mode 100644
index 0000000000..98a786a966
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-en-rCA/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif font</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Font size decrease</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Font size increase</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Dark</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Dark colour scheme</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia colour scheme</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Light</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Light colour scheme</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-en-rGB/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-en-rGB/strings.xml
new file mode 100644
index 0000000000..98a786a966
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-en-rGB/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif font</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Font size decrease</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Font size increase</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Dark</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Dark colour scheme</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia colour scheme</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Light</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Light colour scheme</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-eo/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-eo/strings.xml
new file mode 100644
index 0000000000..719f10262b
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-eo/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Senserifa</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Tiparo senserifa</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serifa</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Tiparo serifa</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Etigi tiparon</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Grandigi tiparon</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Malhela</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Malhelkolora skemo</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepikolora skemo</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Hela</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Helkolora skemo</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rAR/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rAR/strings.xml
new file mode 100644
index 0000000000..e37f09be5f
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rAR/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans-serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Fuente Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fuente Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Disminución del tamaño de la fuente</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Aumento del tamaño de la fuente</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Oscuro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Esquema de color oscuro</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Esquema de color sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Claro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Esquema de color claro</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rCL/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rCL/strings.xml
new file mode 100644
index 0000000000..901d2fcb3c
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rCL/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Fuente Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fuente Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Reducción del tamaño de la fuente</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Incremento del tamaño de la fuente</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Oscuro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Esquema de color oscuro</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Esquema de color sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Claro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Esquema de color claro</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rES/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rES/strings.xml
new file mode 100644
index 0000000000..6ff0918f51
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rES/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Fuente Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fuente Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Disminuir tamaño de fuente</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Aumentar tamaño de fuente</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Oscuro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Esquema de colores oscuros</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Esquema de colores sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Claro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Esquema de colores claros</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rMX/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rMX/strings.xml
new file mode 100644
index 0000000000..266654f423
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-es-rMX/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Fuente Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fuente Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Disminuir tamaño de fuente</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Aumentar tamaño de fuente</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Oscuro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Esquema de color oscuro</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Esquema de color sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Claro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Esquema de color claro</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-es/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-es/strings.xml
new file mode 100644
index 0000000000..6ff0918f51
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-es/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Fuente Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fuente Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Disminuir tamaño de fuente</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Aumentar tamaño de fuente</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Oscuro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Esquema de colores oscuros</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Esquema de colores sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Claro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Esquema de colores claros</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-et/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-et/strings.xml
new file mode 100644
index 0000000000..672015654e
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-et/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">seriifideta</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">seriifideta font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">seriifidega</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">seriifidega font</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">fondi suuruse vähendamine</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">fondi suuruse suurendamine</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">tume</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">tume värviskeem</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">seepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">seepia värviskeem</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">hele</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">hele värviskeem</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-eu/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-eu/strings.xml
new file mode 100644
index 0000000000..df496fd857
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-eu/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif letra-tipoa</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif letra-tipoa</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Txikiagotu letra tamaina</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Handiagotu letra tamaina</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Iluna</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Kolore-eskema iluna</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia kolore-eskema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Argia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Kolore-eskema argia</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-fa/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-fa/strings.xml
new file mode 100644
index 0000000000..65abe288c6
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-fa/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">بدون سِریف</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">قلم بدون سِریف</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">سِریف</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">قلم سِریف</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">کاهش اندازهٔ قلم</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">افزایش اندازهٔ قلم</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">تیره</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">طرح رنگ تیره</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">سوبیایی</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">طرح رنگی سوبیایی</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">روشن</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">طرح رنگ روشن</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ff/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ff/strings.xml
new file mode 100644
index 0000000000..2e43edd832
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ff/strings.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Ustugol darnde alkule</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Ɓeydugol darnde alkule</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Niɓɓo</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Leerɗo</string>
+    </resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-fi/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-fi/strings.xml
new file mode 100644
index 0000000000..964c1c91cb
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-fi/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Päätteetön</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Päätteetön fontti</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Päätteellinen</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Päätteellinen fontti</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Pienennä fontin kokoa</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Suurenna fontin kokoa</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Tumma</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Tumma väriteema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Seepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Seepiamainen väriteema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Vaalea</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Vaalea väriteema</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-fr/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-fr/strings.xml
new file mode 100644
index 0000000000..93121bddbc
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-fr/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans empattement</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Police sans empattement</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Empattement</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Police avec empattement</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Réduction de la taille de la police</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Augmentation de la taille de la police</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Sombre</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Jeu de couleurs sombres</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sépia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Jeu de couleurs sépia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Clair</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Jeu de couleurs claires</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-fur/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-fur/strings.xml
new file mode 100644
index 0000000000..1d4a29ffd7
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-fur/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Cence graciis (sans serif)</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Caratar cence graciis (sans serif)</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Cun graciis (serif)</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Caratar cun graciis (serif)</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Diminuìs dimension caratars</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Aumente dimension caratars</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Scûr</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Scheme di colôrs scûrs</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepât</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Scheme di colôrs sepâts</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Clâr</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Scheme di colôrs clârs</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-fy-rNL/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-fy-rNL/strings.xml
new file mode 100644
index 0000000000..93ff9bf9d8
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-fy-rNL/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Skreefleas</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Lettertype Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Mei skreef</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Lettertype Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Lettergrutte ferlytsje</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Lettertype fergrutsje</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Donker</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Donker kleureskema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia kleureskema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Ljocht</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Ljocht kleureskema</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ga-rIE/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ga-rIE/strings.xml
new file mode 100644
index 0000000000..eb2ec6e0b3
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ga-rIE/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Cló Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Cló Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Laghdaigh an cló</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Méadaigh an cló</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Dorcha</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Scéim dathanna dorcha</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Dúch Cudail</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Scéim dathanna dúch cudail</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Sorcha</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Scéim dathanna sorcha</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-gd/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-gd/strings.xml
new file mode 100644
index 0000000000..daf58b6252
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-gd/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans-serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Cruth-clò sans-serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Cruth-clò serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Lùghdaich meud a’ chrutha-chlò</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Meudaich an cruth-clò</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Dorcha</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Sgeama dhathan dorcha</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sgeama dhathan sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Soilleir</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Sgeama dhathan soilleir</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-gl/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-gl/strings.xml
new file mode 100644
index 0000000000..f223fabb5f
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-gl/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans-serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Tipo de letra sans-Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Tipo de letra serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Aumento do tamaño da letra</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Redución do tamaño da letra</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Escuro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Esquema de cores escuras</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Esquema de cores sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Claro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Esquema de cores claras</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-gn/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-gn/strings.xml
new file mode 100644
index 0000000000..003a68394e
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-gn/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans-serif</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif reñoiha</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif reñoiha</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Emomichĩ tai tuichakue</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Embotuicha tai tuichakue</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Ypytũ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Sa’y ypytũva raity</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sa’y sepia raity</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Tesakã</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Sa’y hesakãva raity</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-gu-rIN/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-gu-rIN/strings.xml
new file mode 100644
index 0000000000..a433b5dde6
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-gu-rIN/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">સેન્સ-શેરીફ</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">સેન્સ શેરીફ ફોન્ટ</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">શેરીફ</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">શેરીફ ફોન્ટ</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">ફોન્ટના કદ ઘટાડો</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">ફોન્ટના કદ વધારો</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">ઘટ્ટ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">ઘાટા રંગ યોજના</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">સેપિયા</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">સેપિયા રંગ યોજના</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">આછો</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">આછા રંગ યોજના</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-hi-rIN/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hi-rIN/strings.xml
new file mode 100644
index 0000000000..a9e1ac2996
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hi-rIN/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans serif फ़ॉन्ट</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif फ़ॉन्ट</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">फ़ॉन्ट आकार कम करें</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">फ़ॉन्ट आकार बढ़ाएं</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">डार्क</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">डार्क कलर स्कीम</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">सेपिया</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">सेपिया कलर स्कीम</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">लाइट</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">लाइट कलर स्कीम</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-hil/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hil/strings.xml
new file mode 100644
index 0000000000..14eebfce9c
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hil/strings.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif font</string>
+
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    </resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-hr/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hr/strings.xml
new file mode 100644
index 0000000000..6d21274a81
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hr/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Bezserifni</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Bezserifni font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serifni</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serifni font</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Smanjenje veličine fonta</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Povećanje veličine fonta</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Tamna</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Tamna shema boja</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Smeđa</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Smeđa shema boja</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Svijetla</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Svijetla shema boja</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-hsb/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hsb/strings.xml
new file mode 100644
index 0000000000..34b0fb4c20
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hsb/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Pismo sans serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serifowe pismo</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Wulkosć pisma pomjeńšić</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Wulkosć pisma powjetšić</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Ćmowy</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Ćmowa barbowa šema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepija</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Barbowa šema Sepija</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Swětły</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Swětła barbowa šema</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-hu/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hu/strings.xml
new file mode 100644
index 0000000000..8b1b4517da
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hu/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Talpatlan</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Talpatlan betűkészlet</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Talpas</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Talpas betűtípus</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Betűméret csökkentése</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Betűméret csökkentése</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Sötét</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Sötét színösszeállítás</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Szépia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Szépia színösszeállítás</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Világos</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Világos színösszeállítás</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-hy-rAM/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hy-rAM/strings.xml
new file mode 100644
index 0000000000..c6390958f8
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-hy-rAM/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif տառատեսակ</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif տառատեսակ</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Տառատեսակի չափի փոքրացում</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Տառատեսակի չափի մեծացում</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Մուգ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Մուգ գույնի ուրվակազմ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Դարչնագույն</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Դարչնագույն գույնի ուրվակազմ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Լուսավոր</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Բաց գույնի ուրվակազմ</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ia/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ia/strings.xml
new file mode 100644
index 0000000000..b2e9faa119
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ia/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Typo de character Sans serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Typo de character Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Reducer le dimension del characteres</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Accrescer le dimension del characteres</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Obscur</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Schema de color obscur</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Schema de color sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Clar</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Schema de color clar</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-in/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-in/strings.xml
new file mode 100644
index 0000000000..673c931872
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-in/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Fon Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fon Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Kurangi ukuran fon</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Tingkatkan ukuran fon</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Gelap</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Skema warna gelap</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Skema warna sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Terang</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Skema warna terang</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-is/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-is/strings.xml
new file mode 100644
index 0000000000..ed2aadcb00
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-is/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans-serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif leturgerð</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif leturgerð</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Minnka leturstærð</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Auka leturstærð</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Dökkt</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Dökkt litastef</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepía</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepía litastef</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Ljóst</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Ljóst litastef</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-it/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-it/strings.xml
new file mode 100644
index 0000000000..22fea45d24
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-it/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Senza grazie</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Carattere senza grazie</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Con grazie</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Carattere con grazie</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Riduci dimensione dei caratteri</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Aumenta dimensione dei caratteri</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Scuro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Combinazione di colori scura</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Seppia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Combinazione di colori seppia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Chiaro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Combinazione di colori chiara</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-iw/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-iw/strings.xml
new file mode 100644
index 0000000000..2b7451b69d
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-iw/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">ללא עיטור</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">גופן ללא עיטורים</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">מעוטר</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">גופן מעוטר</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">הקטנת גודל גופן</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">הגדלת גודל גופן</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">כהה</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">ערכת צבעים כהה</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">חום כהה</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">ערכת צבעים חמה</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">בהיר</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">ערכת צבעים בהירה</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ja/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ja/strings.xml
new file mode 100644
index 0000000000..6faa51a99e
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ja/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">ゴシック体 (Sans-serif)</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">ゴシック体のフォント</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">明朝体 (Serif)</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">明朝体のフォント</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">フォントサイズを小さく</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">フォントサイズを大きく</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Dark</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">暗いカラースキーム</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">セピアのカラースキーム</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Light</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">明るいカラースキーム</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ka/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ka/strings.xml
new file mode 100644
index 0000000000..40d031d4c7
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ka/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">უნაჭდევო</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">უნაჭდევო შრიფტი</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">ნაჭდევებით</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">ნაჭდევებიანი შრიფტი</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">შრიფტის ზომის შემცირება</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">შრიფტის ზომის მომატება</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">მუქი</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">მუქი ფერები</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">სეპია</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">მოყავისფრო ფერები</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">ნათელი</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">ნათელი ფერები</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-kaa/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-kaa/strings.xml
new file mode 100644
index 0000000000..9a90792a6d
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-kaa/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans serif shrifti</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif shrifti</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Shrift ólshemin kishireytiw</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Shrift ólshemin úlkeytiw</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Qarańǵı</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Qara reń gamması</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepiya reń gamması</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Jaqtı</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Ashıq reń gamması</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-kab/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-kab/strings.xml
new file mode 100644
index 0000000000..edbcc1d2dd
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-kab/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Tasefsit Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Tasefsit Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Asenɣes n teɣzi n tsefsit</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Timerna n teɣzi n tsefsit</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Aberkan</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Initen ubriken</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Initen Sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Aceɛlal</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Initen iceɛlalen</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-kk/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-kk/strings.xml
new file mode 100644
index 0000000000..64e057d5ff
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-kk/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif қарібі</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif қарібі</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Қаріп өлшемін кішірейту</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Қаріп өлшемін үлкейту</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Күңгірт</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Күңгірт түстер схемасы</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Сепия</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Сепия түстер схемасы</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Ашық түсті</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Ашық түсті түстер схемасы</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-kmr/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-kmr/strings.xml
new file mode 100644
index 0000000000..06f53cd051
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-kmr/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Fonta Sans Serifê</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fonta Serifê</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Biçûkkirina mezinahiya fontê</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Mezinkirina mezinahiya fontê</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Tarî</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Şemaya rengê tarî</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepya</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Şemaya rengê sepyayî</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Ronî</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Şemaya rengê ronî</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-kn/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-kn/strings.xml
new file mode 100644
index 0000000000..5ca8fe9639
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-kn/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">ಸಾನ್ಸ್ ಸೆರಿಫ್</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">ಸಾನ್ಸ್ ಸೆರಿಫ್ ಫಾಂಟ್</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">ಸೆರಿಫ್</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">ಸೆರಿಫ್ ಫಾಂಟ್</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">ಫಾಂಟ್ ಗಾತ್ರ ಕಡಿಮೆಯಾಗುತ್ತದೆ</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">ಫಾಂಟ್ ಗಾತ್ರ ಹೆಚ್ಚಳ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">ಗಾಢ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">ಗಾಢ ಬಣ್ಣದ ಯೋಜನೆ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">ಸೆಪಿಯ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">ಸೆಪಿಯಾ ಬಣ್ಣದ ಯೋಜನೆ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">ತಿಳಿ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">ತಿಳಿ ಬಣ್ಣದ ಯೋಜನೆ</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ko/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ko/strings.xml
new file mode 100644
index 0000000000..3189ebf4c3
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ko/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">산세리프</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">산세리프 글꼴</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">세리프</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">세리프 글꼴</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">글꼴 크기 작게</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">글꼴 크기 크게</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">어둡게</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">어두운 색 구성표</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">세피아</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">세피아 색 구성표</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">밝게</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">밝은 색 구성표</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-lij/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-lij/strings.xml
new file mode 100644
index 0000000000..f2e20c0a7f
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-lij/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif font</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Carateri ciù picin</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Carateri ciù grendi</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Scuo</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Conbinaçion scua</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Conbinaçion sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Ciæo</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Conbinaçion Ciæa</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-lo/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-lo/strings.xml
new file mode 100644
index 0000000000..42b88f3741
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-lo/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">ຟັອນ Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">ຟັອນ Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">ຂະໜາດຟັອນຫຼຸດລົງ</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">ຂະໜາດຟັອນເພີ່ມຂື້ນ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">ມືດ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">ຊຸດສີມືດດຳ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">ສີນ້ຳຕານດຳ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">ຊຸດສີນ້ຳຕານດຳ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">ແຈ້ງ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">ຊຸດສີແຈ້ງສະຫວ່າງ</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-lt/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-lt/strings.xml
new file mode 100644
index 0000000000..a98b68ae91
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-lt/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Be užraitų</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Šriftas be užraitų</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Su užraitas</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Šriftas su užraitais</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Šrifto dydžio mažinimas</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Šrifto dydžio didinimas</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Tamsus</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Tamsi spalvų aibė</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepija</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepijos spalvų aibė</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Šviesus</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Šviesi spalvų aibė</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ml/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ml/strings.xml
new file mode 100644
index 0000000000..bcf0cabcc1
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ml/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">സാൻസ് സെരിഫ്</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">സാൻസ് സെരിഫ് ഫോണ്ട്</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">സെരിഫ്</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">സെരിഫ് ഫോണ്ട്</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">ഫോണ്ട് വലുപ്പം കുറയ്ക്കുക</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">ഫോണ്ട് വലുപ്പം കൂട്ടുക</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">കടും</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">ഡാർക്ക് കളർ സ്കീം</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">സെപിയ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">സെപിയ കളർ സ്കീം</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">ലൈറ്റ്</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">ലൈറ്റ് കളർ സ്കീം</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-mr/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-mr/strings.xml
new file mode 100644
index 0000000000..a98aeb3639
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-mr/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">सॅन्स सेरिफ</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">सॅन्स सेरिफ टंक</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">सेरिफ</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">सेरिफ टंक</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">टंकाचा आकार कमी करा</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">टंकाचा आकार वाढावा</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">गडद</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">गडद रंग योजना</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">दाट तपकिरी</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">दाट तपकिरी रंग योजना</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">फिकट</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">फिकट रंग योजना</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-my/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-my/strings.xml
new file mode 100644
index 0000000000..be83dbe7e1
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-my/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif ဖောင့်</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">serif ဖောင့်</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">စာလုံးအရွယ်အစားလျှေ့ာပါ</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">စာလုံးအရွယ်အစားတိုးပါ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">အမှောင်</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">မှောင်မိုက်အရောင်အစီအစဉ်</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">နီညိုရောင်</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">နီညိုရောင် ပြသမှု</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">အလင်း</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">အလင်းအရောင်အစီအစဉ်</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-nb-rNO/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-nb-rNO/strings.xml
new file mode 100644
index 0000000000..21758154bd
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-nb-rNO/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Seriffløs skrift</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Seriffløs skrift</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Seriffskrift</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Seriffskrift</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Skriftstørrelse reduseres</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Skriftstørrelse økes</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Mørk</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Mørkt fargevalg</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia fargevalg</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Lys</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Lyst fargevalg</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ne-rNP/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ne-rNP/strings.xml
new file mode 100644
index 0000000000..08f2ddb96d
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ne-rNP/strings.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">सानस्-सेरिफ</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">सानस्-सेरिफ फन्ट</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">सेरिफ</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">सेरिफ फन्ट</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">फन्टको आकार घटाउनुहोस्</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">फन्टको आकार बढाउनुहोस्</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">अँध्यारो</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">अँध्यारो रङ्ग योजना</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">सेपिया</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">सेपिया रंग योजना</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">उज्यालो</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">उज्यालो रङ्ग योजना</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-nl/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-nl/strings.xml
new file mode 100644
index 0000000000..5cd24cbf48
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-nl/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Schreefloos</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Lettertype Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Met schreef</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Lettertype Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Lettergrootte verkleinen</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Lettergrootte vergroten</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Donker</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Donker kleurenschema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia kleurenschema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Licht</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Licht kleurenschema</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-nn-rNO/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-nn-rNO/strings.xml
new file mode 100644
index 0000000000..7060f25970
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-nn-rNO/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Serifflaus skrift</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Serifflaus skrift</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Seriffskrift</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Seriffskrift</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Skriftstørrelse minskar</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Skriftstørrelse aukar</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Mørkt</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Mørkt fargeval</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia fargeval</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Lyst</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Lyst fargeval</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-oc/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-oc/strings.xml
new file mode 100644
index 0000000000..b914e4e856
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-oc/strings.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Polissa Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Polissa Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Reduccion de la talha de la polissa</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Agrandiment de la talha de la polissa</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Fosc</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Jòc de colors foscas</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sèpia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Jòc de colors sépia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Clar</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Jòc de color claras</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-or/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-or/strings.xml
new file mode 100644
index 0000000000..617dade600
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-or/strings.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">ଗାଢ଼</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">ଗାଢ଼ ରଙ୍ଗ ଯୋଜନା</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">ସେପିଆ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">ସେପିଆ ରଙ୍ଗ ଯୋଜନା</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">ହାଲୁକା</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">ହାଲୁକା ରଙ୍ଗ ଯୋଜନା</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-pa-rIN/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-pa-rIN/strings.xml
new file mode 100644
index 0000000000..07052c8e4c
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-pa-rIN/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">ਸਨਜ ਸੈਰੀਫ਼</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">ਸਨਜ ਸੈਰੀਫ਼ ਫ਼ੋਂਟ</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">ਸੈਰੀਫ਼</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">ਸੈਰੀਫ਼ ਫ਼ੋਂਟ</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">ਫ਼ੋਂਟ ਆਕਾਰ ਘਟਾਓ</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">ਫ਼ੋਂਟ ਆਕਾਰ ਵਧਾਓ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">ਗੂੜ੍ਹਾ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">ਗੂੜ੍ਹੇ ਰੰਗ ਦੀ ਰੂਪ-ਰੇਖਾ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">ਭੂਰਾ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">ਭੂਰੇ ਰੰਗ ਦੀ ਰੂਪ-ਰੇਖਾ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">ਹਲਕਾ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">ਹਲਕੀ ਰੰਗ ਸਕੀਮ</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-pa-rPK/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-pa-rPK/strings.xml
new file mode 100644
index 0000000000..0b8fa4d685
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-pa-rPK/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">سیرف بغیر</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">سیرف بغیر فونٹ</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">سیرف</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">سیرف فونٹ</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">فونٹ آکار گھٹاؤ</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">فونٹ آکار ودھاؤ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">گوڑھا</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">گوڑھے رنگ دی روپ ریکھا</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">بھورا</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">بھورا رنگ دی روپ ریکھا</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">ہلکا</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">ہلکے رنگ دی روپ ریکھا</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-pl/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-pl/strings.xml
new file mode 100644
index 0000000000..0c07108257
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-pl/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Bezszeryfowa</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Czcionka bezszeryfowa</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Szeryfowa</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Czcionka szeryfowa</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Zmniejsz rozmiar czcionki</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Zwiększ rozmiar czcionki</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Ciemny</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Ciemny schemat kolorów</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Schemat kolorów sepii</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Jasny</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Jasny schemat kolorów</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-pt-rBR/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-pt-rBR/strings.xml
new file mode 100644
index 0000000000..f0d45e960f
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-pt-rBR/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sem serifa</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Fonte sem serifa</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Com serifa</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fonte com serifa</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Reduzir tamanho da fonte</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Aumentar tamanho da fonte</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Escuro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Esquema de cores escuras</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sépia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Esquema de cores sépia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Claro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Esquema de cores claras</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-pt-rPT/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-pt-rPT/strings.xml
new file mode 100644
index 0000000000..aba390c250
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-pt-rPT/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sem serifa</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Tipo de letra sem serifa</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serifa</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Tipo de letra com serifa</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Redução do tamanho da letra</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Aumento do tamanho da letra</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Escuro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Esquema de cores escuro</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sépia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Esquema de cores sépia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Claro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Esquema de cores claras</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-rm/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-rm/strings.xml
new file mode 100644
index 0000000000..b0753955e5
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-rm/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Senza serifas</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Scrittira senza serifas</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Cun serifas</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Scrittira cun serifas</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Empitschnir la scrittira</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Engrondir la scrittira</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Stgir</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Schema stgir</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Schema da sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Cler</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Schema cler</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ro/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ro/strings.xml
new file mode 100644
index 0000000000..808f367aa5
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ro/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Font Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Font Serif </string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Scăderea dimensiunii fontului</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Creșterea dimensiunii fontului</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Întunecat</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Paletă de culori închise</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Paletă de culori sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Deschis</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Paletă de culori deschise</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ru/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ru/strings.xml
new file mode 100644
index 0000000000..4d4a49469a
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ru/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Без засечек</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Шрифт без засечек</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">С засечками</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Шрифт с засечками</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Уменьшить размер шрифта</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Увеличить размер шрифта</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Тёмная</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Цветовая гамма «Тёмная»</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Сепия</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Цветовая гамма «Сепия»</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Светлая</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Цветовая гамма «Светлая»</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-sat/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sat/strings.xml
new file mode 100644
index 0000000000..d96b1fb8cd
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sat/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">ᱥᱮᱱᱥ ᱥᱮᱨᱤᱯᱷ</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">ᱥᱮᱱᱥ ᱥᱮᱨᱤᱯᱷ ᱪᱤᱠᱤ</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">ᱥᱮᱨᱤᱯᱷ</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">ᱥᱮᱨᱤᱯᱷ ᱪᱤᱠᱤ</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">ᱪᱤᱠᱤ ᱢᱟᱯ ᱠᱚᱢ ᱢᱮ</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">ᱪᱤᱠᱤ ᱢᱟᱯ ᱢᱟᱨᱟᱝ ᱢᱮ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">ᱧᱩᱛ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">ᱧᱩᱛ ᱨᱚᱝ ᱯᱚᱱᱛᱷᱟ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">ᱥᱮᱯᱤᱭᱟ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">ᱥᱮᱯᱤᱭᱟ ᱨᱚᱝ ᱯᱚᱱᱛᱷᱟ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">ᱢᱟᱨᱥᱟᱞ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">ᱢᱟᱨᱥᱟᱞ ᱨᱚᱝ ᱯᱚᱱᱛᱷᱟ</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-sc/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sc/strings.xml
new file mode 100644
index 0000000000..e49917faef
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sc/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Tipografia Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Tipografia Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Mìnima sa mannària de sa tipografia</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Cresche sa mannària de sa tipografia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Iscuru</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Tema de colores iscuru</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sèpia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Tema de colores sèpia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Craru</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Tema de colores craru</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-si/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-si/strings.xml
new file mode 100644
index 0000000000..c3ee32bdea
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-si/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">සාන්ස් සෙරිෆ්</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">සාන්ස් සෙරිෆ් අකුර</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">සෙරිෆ්</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">සෙරිෆ් අකුර</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">අකුරේ තරම අඩු කිරීම</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">අකුරේ තරම වැඩි කිරීම</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">අඳුරු</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">අඳුරු වර්ණ රටාව</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">ලා දුඹුරු</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">ලා දුඹුරු වර්ණ රටාව</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">දීප්ත</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">දීප්ත වර්ණ රටාව</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-sk/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sk/strings.xml
new file mode 100644
index 0000000000..77f7c9a80a
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sk/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Bezpätkové</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Bezpätkové písmo</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Pätkové</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Pätkové písmo</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Zmenšiť písmo</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Zväčšiť písmo</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Tmavá</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Tmavá farebná schéma</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sépia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Farebná schéma sépia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Svetlá</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Svetlá farebná schéma</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-skr/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-skr/strings.xml
new file mode 100644
index 0000000000..34b1b31c0d
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-skr/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">سینس سیرف</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">سانس سیرف فونٹ</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">سیرف</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">سیرف فونٹ</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">فونٹ سائز گھٹاؤ</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">فونٹ سائز ودھاؤ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">شوخ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">شوخ رنگ سکیم</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">سیپیا</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">سیپیا رنگ سکیم</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">پھکا</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">پھکا رنگ سکیم</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-sl/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sl/strings.xml
new file mode 100644
index 0000000000..f4f1048988
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sl/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Pisava Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Pisava Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Zmanjšanje velikosti pisave</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Povečanje velikosti pisave</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Temna</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Temna barvna shema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia barvna shema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Svetla</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Svetla barvna shema</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-sq/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sq/strings.xml
new file mode 100644
index 0000000000..df876b388e
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sq/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Shkronja Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Shkronja Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Zvogëlim madhësie shkronjash</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Zmadhim madhësie shkronjash</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">I errët</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Skemë ngjyrash të errëta</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Skemë ngjyrash sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">I çelët</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Skemë ngjyrash të çelëta</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-sr/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sr/strings.xml
new file mode 100644
index 0000000000..baf441de8d
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sr/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Бесерифни</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Бесерифни фонт</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Серифни</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Серифни фонт</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Смањење величине фонта</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Повећање величине фонта</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Тамна</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Тамна шема боја</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Сепиа</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Сепиа шема боја</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Светла</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Светла шема боја</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-su/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-su/strings.xml
new file mode 100644
index 0000000000..de0dbbb3a0
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-su/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans-serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Font Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Font Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Ukuran font ngaalitan</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Ukuran font ngaageungan</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Poék</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Skéma warna poék</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Skéma warna sépia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Caang</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Skéma warna caang</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-sv-rSE/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sv-rSE/strings.xml
new file mode 100644
index 0000000000..f740efd80e
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-sv-rSE/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif typsnitt</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif typsnitt</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Teckenstorlek minskar</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Teckenstorlek ökar</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Mörkt</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Mörkt färgschema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia färgschema</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Ljust</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Ljust färgschema</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ta/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ta/strings.xml
new file mode 100644
index 0000000000..6249d73494
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ta/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">சான்ஸ் செரிஃப்</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">சான்ஸ் செரிஃப் எழுத்துரு</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">ஷெரிஃப்</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">செரிஃப் எழுத்துரு</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">எழுத்துரு அளவு குறைகிறது</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">எழுத்துரு அளவு அதிகரிக்கும்</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">கருமை</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">இருண்ட வண்ண திட்டம்</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">செபியா</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">செபியா வண்ணத் திட்டம்</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">வெளிர்</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">வெளிர் வண்ணத் திட்டம்</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-te/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-te/strings.xml
new file mode 100644
index 0000000000..9a367ee164
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-te/strings.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">సాన్స్ సెరీఫ్</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">సాన్స్ సెరిఫ్ ఫాంటు</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">సెరిఫ్</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">సెరిఫ్ ఫాంటు</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">ఫాంటు పరిమాణం తగ్గించు</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">ఫాంటు పరిమాణం పెంచు</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">నల్లని</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">నల్లని రంగు స్కీము</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">సేపియా</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">సేపియా రంగు స్కీము</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">లేత</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">లేత రంగు</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-tg/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tg/strings.xml
new file mode 100644
index 0000000000..c54770b1e0
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tg/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Ғайрибарҷаста</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Ҳуруфи ғайрибарҷаста</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Барҷаста</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Ҳуруфи барҷаста</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Хурд кардани андозаи ҳуруф</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Калон кардани андозаи ҳуруф</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Торик</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Нақшаи рангии торик</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Сепия</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Нақшаи рангии сепия</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Равшан</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Нақшаи рангии равшан</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-th/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-th/strings.xml
new file mode 100644
index 0000000000..9f55fc255b
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-th/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">ไม่มีเชิง</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">แบบอักษรไม่มีเชิง</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">มีเชิง</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">แบบอักษรมีเชิง</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">ลดขนาดแบบอักษร</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">เพิ่มขนาดแบบอักษร</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">มืด</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">แบบแผนสีมืด</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">ซีเปีย</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">แบบแผนสีซีเปีย</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">สว่าง</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">แบบแผนสีสว่าง</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-tl/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tl/strings.xml
new file mode 100644
index 0000000000..b67303393c
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tl/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif font</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Liitan ang font size</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Lakihan ang font size</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Madilim</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Madilim na color scheme</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia color scheme</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Maliwanag</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Maliwanag na color scheme</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-tok/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tok/strings.xml
new file mode 100644
index 0000000000..e4cd63a232
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tok/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">linja lili ala</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">nasin sitelen pi linja lili ala</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">linja lili</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">nasin sitelen pi linja lili</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">sitelen li kama lili</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">sitelen li kama suli</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">pimeja</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">nasin lukin pimeja</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">loje lili</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">nasin lukin pi loje lili</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">suno</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">nasin lukin suno</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-tr/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tr/strings.xml
new file mode 100644
index 0000000000..3f8430132c
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tr/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans serif yazı tipi</string>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif yazı tipi</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Yazı tipi boyutu küçültme</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Yazı tipi boyutu büyütme</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Koyu</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Koyu renk şeması</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepya</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepya renk şeması</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Açık</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Açık renk şeması</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-trs/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-trs/strings.xml
new file mode 100644
index 0000000000..b494597f2f
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-trs/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Lechrâ Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Lechrâ Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Nāgi\'iaj lij lêchra</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Nāgi\'iaj yāchìj lêchra</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Gā rūmin\' man</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Nej dūguì\' kolô rūmin\'in</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Rūguì\'i</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Nej dūguì\' kolô rūguì\'i</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Sa yigìïn</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Nej dūguì\' kolô yigìïn</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-tt/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tt/strings.xml
new file mode 100644
index 0000000000..9b3aa9dcb3
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tt/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif шрифты</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif шрифты</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Шрифт үлчәмен кечерәйтү</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Шрифт үлчәмен зурайту</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Караңгы</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Караңгы төсле схема</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Сепия</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Сепия төсләр схемасы</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Ачык</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Ачык төсле схема</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-tzm/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tzm/strings.xml
new file mode 100644
index 0000000000..c684bc547f
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-tzm/strings.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Tasefsit Serif</string>
+
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Adeɣmum</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Anafaw</string>
+    </resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ug/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ug/strings.xml
new file mode 100644
index 0000000000..164979ae7a
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ug/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif خەت نۇسخا</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif خەت نۇسخا</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">خەت كىچىكلىتىش</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">خەت چوڭايتىش</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">قاراڭغۇ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">قېنىق رەڭ لايىھەسى</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">قېنىق قوڭۇر رەڭ</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">قېنىق قوڭۇر رەڭ لايىھەسى</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">يورۇق</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">سۇس رەڭ لايىھەسى</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-uk/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-uk/strings.xml
new file mode 100644
index 0000000000..43ff1f3b0c
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-uk/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Без зарубок</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Шрифт без зарубок</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Із зарубками</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Шрифт із зарубками</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Зменшити розмір шрифту</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Збільшити розмір шрифту</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Темна</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Темна колірна тема</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Сепія</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Колірна тема сепія</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Світла</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Світла колірна тема</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-ur/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ur/strings.xml
new file mode 100644
index 0000000000..3da140cb4e
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-ur/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">سینس سیرف</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">سانس سیرف فونٹ</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">سیرف</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">سیرف فونٹ</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">فونٹ سائز کم کریں</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">فونٹ سائز اضافہ کریں</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">گہرا</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">گہرے رنگ کی اسکیم</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">سیپیا</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">سیپیا رنگ سکیم</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">ہلکا</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">ہلکے رنگ کی اسکیم</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-uz/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-uz/strings.xml
new file mode 100644
index 0000000000..d0ac181290
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-uz/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif shrifti</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif shrifti</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Shrift hajmini kichraytirish</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Shrift hajmini kattalashtirish</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Qora</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">“Qora” rang sxemasi</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">“Sepiya” rang sxemasi</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Yorqin</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">“Yorqin” rang sxemasi</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-vec/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-vec/strings.xml
new file mode 100644
index 0000000000..5802794118
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-vec/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif font</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Ridusi dimension de i caratari</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Aumenta dimension de i caratari</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Scuro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Conbinasion de coƚori scura</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepa</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Conbinasion de coƚori sepa</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Ciaro</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Conbinasion de coƚori ciara</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-vi/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-vi/strings.xml
new file mode 100644
index 0000000000..116ecd027d
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-vi/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Phông Sans Serif</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Phông Serif</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Giảm cỡ chữ</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Tăng cỡ chữ</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Tối</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Phối màu tối</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Nâu đen</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Phối màu nâu đen</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Sáng</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Phối màu sáng</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-yo/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-yo/strings.xml
new file mode 100644
index 0000000000..135da6274e
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-yo/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Fọ́ǹtì sérọ̀fù</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Ìwọn fọ́ǹtì dínkù</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Ìwọn fọ́ǹtì pọ̀ si</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Dúdú</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Ìlànà aláwọ̀ dúdú</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Ìlànà aláwọ̀ Sepia</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Mọ́lẹ̀</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Ìlànà aláwọ̀ tó mọ́lẹ̀</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-zh-rCN/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-zh-rCN/strings.xml
new file mode 100644
index 0000000000..059aab3a88
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-zh-rCN/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">无衬线</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">无衬线字体</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">衬线</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">衬线字体</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">缩小文字</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">增大文字</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">深邃</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">深邃配色</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">纸墨</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">纸墨配色</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">明亮</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">明亮配色</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values-zh-rTW/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values-zh-rTW/strings.xml
new file mode 100644
index 0000000000..21f91277d3
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values-zh-rTW/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">無襯線</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">無襯線字型</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">襯線字</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">襯線字型</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">縮小字體</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">放大字體</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">暗色</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">暗色佈景主題</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">懷舊風</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">棕褐色調佈景主題</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">亮色</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">亮色佈景主題</string>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values/attrs.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values/attrs.xml
new file mode 100644
index 0000000000..71637e8804
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values/attrs.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ This Source Code Form is subject to the terms of the Mozilla Public
+  ~  License, v. 2.0. If a copy of the MPL was not distributed with this
+  ~  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  -->
+
+<resources>
+    <declare-styleable name="ReaderViewControlsBar">
+        <attr name="readerViewControlsBackgroundColor" format="reference|color" />
+        <attr name="readerViewControlsSelectedColor" format="reference|color" />
+        <attr name="readerViewControlsTextColor" format="reference|color" />
+    </declare-styleable>
+
+    <style name="RadioButtonSelectedTextStyle" parent="@android:style/Widget.CompoundButton">
+        <item name="android:textColor">@drawable/radiobutton_selected_text_selector</item>
+        <item name="android:button">@null</item>
+        <item name="android:padding">16dp</item>
+    </style>
+
+    <style name="RadioButtonSelectedBorderStyle" parent="@android:style/Widget.CompoundButton">
+        <item name="android:button">@null</item>
+        <item name="android:padding">16dp</item>
+        <item name="android:textStyle">bold</item>
+    </style>
+</resources>
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values/colors.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values/colors.xml
new file mode 100644
index 0000000000..94136325dd
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values/colors.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ This Source Code Form is subject to the terms of the Mozilla Public
+  ~  License, v. 2.0. If a copy of the MPL was not distributed with this
+  ~  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  -->
+
+<resources>
+    <color name="mozac_feature_readerview_selected">#592ACB</color>
+    <color name="mozac_feature_readerview_text_color">#220033</color>
+    <color name="mozac_feature_readerview_text_color_disabled">#B1B1B3</color>
+    <color name="mozac_feature_readerview_dark_background">#32313B</color>
+    <color name="mozac_feature_readerview_light_background">#EFEFF2</color>
+    <color name="mozac_feature_readerview_sepia_background">#FDF4E0</color>
+</resources>
\ No newline at end of file
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values/mozac_feature_readerview_strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values/mozac_feature_readerview_strings.xml
new file mode 100644
index 0000000000..cca9a042ff
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values/mozac_feature_readerview_strings.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ This Source Code Form is subject to the terms of the Mozilla Public
+  ~  License, v. 2.0. If a copy of the MPL was not distributed with this
+  ~  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  -->
+
+<resources>
+    <string name="mozac_feature_readerview_negative_sign" translatable="false">−</string>
+    <string name="mozac_feature_readerview_positive_sign" translatable="false">+</string>
+</resources>
\ No newline at end of file
diff --git a/mobile/android/android-components/components/feature/readerview/src/main/res/values/strings.xml b/mobile/android/android-components/components/feature/readerview/src/main/res/values/strings.xml
new file mode 100644
index 0000000000..bd212d57fe
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/main/res/values/strings.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ This Source Code Form is subject to the terms of the Mozilla Public
+  ~  License, v. 2.0. If a copy of the MPL was not distributed with this
+  ~  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  -->
+
+<resources>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_sans_serif_font">Sans serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_sans_serif_font_desc">Sans Serif font</string>
+    <!-- Name for one of the font options available to use -->
+    <string name="mozac_feature_readerview_serif_font">Serif</string>
+    <!-- Accessible description for the font option -->
+    <string name="mozac_feature_readerview_serif_font_desc">Serif font</string>
+
+    <!-- Accessible description for decreasing the font size -->
+    <string name="mozac_feature_readerview_font_size_decrease_desc">Font size decrease</string>
+
+    <!-- Accessible description for increasing the font size -->
+    <string name="mozac_feature_readerview_font_size_increase_desc">Font size increase</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_dark">Dark</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_dark_color_scheme_desc">Dark color scheme</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_sephia">Sepia</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_sepia_color_scheme_desc">Sepia color scheme</string>
+    <!-- Color option for the background -->
+    <string name="mozac_feature_readerview_light">Light</string>
+    <!-- Accessible description for the color option -->
+    <string name="mozac_feature_readerview_light_color_scheme_desc">Light color scheme</string>
+</resources>
\ No newline at end of file
diff --git a/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/ReaderViewFeatureTest.kt b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/ReaderViewFeatureTest.kt
new file mode 100644
index 0000000000..a4b2536ad5
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/ReaderViewFeatureTest.kt
@@ -0,0 +1,608 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview
+
+import android.content.Context
+import android.view.View
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import mozilla.components.browser.state.action.ContentAction
+import mozilla.components.browser.state.action.EngineAction
+import mozilla.components.browser.state.action.ReaderAction
+import mozilla.components.browser.state.action.TabListAction
+import mozilla.components.browser.state.state.BrowserState
+import mozilla.components.browser.state.state.ReaderState
+import mozilla.components.browser.state.state.TabSessionState
+import mozilla.components.browser.state.state.createTab
+import mozilla.components.browser.state.store.BrowserStore
+import mozilla.components.concept.engine.Engine
+import mozilla.components.concept.engine.EngineSession
+import mozilla.components.concept.engine.webextension.MessageHandler
+import mozilla.components.concept.engine.webextension.Port
+import mozilla.components.concept.engine.webextension.WebExtension
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.FONT_SIZE_DEFAULT
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.READER_VIEW_ACTIVE_CONTENT_PORT
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.READER_VIEW_CONTENT_PORT
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.READER_VIEW_EXTENSION_ID
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.READER_VIEW_EXTENSION_URL
+import mozilla.components.feature.readerview.view.ReaderViewControlsBar
+import mozilla.components.feature.readerview.view.ReaderViewControlsView
+import mozilla.components.support.test.any
+import mozilla.components.support.test.argumentCaptor
+import mozilla.components.support.test.eq
+import mozilla.components.support.test.ext.joinBlocking
+import mozilla.components.support.test.mock
+import mozilla.components.support.test.robolectric.testContext
+import mozilla.components.support.test.rule.MainCoroutineRule
+import mozilla.components.support.test.whenever
+import mozilla.components.support.webextensions.WebExtensionController
+import mozilla.ext.appCompatContext
+import org.json.JSONObject
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertNotNull
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertTrue
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.ArgumentMatchers.anyInt
+import org.mockito.Mockito.never
+import org.mockito.Mockito.spy
+import org.mockito.Mockito.times
+import org.mockito.Mockito.verify
+import java.util.Locale
+
+@RunWith(AndroidJUnit4::class)
+class ReaderViewFeatureTest {
+
+    @get:Rule
+    val coroutinesTestRule = MainCoroutineRule()
+
+    @Before
+    fun setup() {
+        WebExtensionController.installedExtensions.clear()
+    }
+
+    @Test
+    fun `start installs webextension`() {
+        val engine: Engine = mock()
+        val store = BrowserStore()
+        val readerViewFeature = ReaderViewFeature(testContext, engine, store, mock())
+
+        readerViewFeature.start()
+
+        val onSuccess = argumentCaptor<((WebExtension) -> Unit)>()
+        val onError = argumentCaptor<((Throwable) -> Unit)>()
+        verify(engine, times(1)).installBuiltInWebExtension(
+            eq(ReaderViewFeature.READER_VIEW_EXTENSION_ID),
+            eq(ReaderViewFeature.READER_VIEW_EXTENSION_URL),
+            onSuccess.capture(),
+            onError.capture(),
+        )
+
+        onSuccess.value.invoke(mock())
+
+        // Already installed, should not try to install again.
+        readerViewFeature.start()
+        verify(engine, times(1)).installBuiltInWebExtension(
+            eq(ReaderViewFeature.READER_VIEW_EXTENSION_ID),
+            eq(ReaderViewFeature.READER_VIEW_EXTENSION_URL),
+            any(),
+            any(),
+        )
+    }
+
+    @Test
+    fun `start registers content message handlers for selected session`() {
+        val engine: Engine = mock()
+        val view: ReaderViewControlsView = mock()
+        val engineSession: EngineSession = mock()
+        val controller = spy(
+            WebExtensionController(
+                READER_VIEW_EXTENSION_ID,
+                READER_VIEW_EXTENSION_URL,
+                READER_VIEW_CONTENT_PORT,
+            ),
+        )
+        val tab = createTab(
+            url = "https://www.mozilla.org",
+            id = "test-tab",
+            engineSession = engineSession,
+        )
+        val store = BrowserStore(
+            initialState = BrowserState(
+                tabs = listOf(tab),
+                selectedTabId = tab.id,
+            ),
+        )
+
+        val readerViewFeature = ReaderViewFeature(testContext, engine, store, view)
+        readerViewFeature.extensionController = controller
+        readerViewFeature.start()
+
+        val onSuccess = argumentCaptor<((WebExtension) -> Unit)>()
+        val onError = argumentCaptor<((Throwable) -> Unit)>()
+        verify(engine, times(1)).installBuiltInWebExtension(
+            eq(ReaderViewFeature.READER_VIEW_EXTENSION_ID),
+            eq(ReaderViewFeature.READER_VIEW_EXTENSION_URL),
+            onSuccess.capture(),
+            onError.capture(),
+        )
+        onSuccess.value.invoke(mock())
+        verify(controller).registerContentMessageHandler(eq(engineSession), any(), eq(READER_VIEW_ACTIVE_CONTENT_PORT))
+        verify(controller).registerContentMessageHandler(eq(engineSession), any(), eq(READER_VIEW_CONTENT_PORT))
+    }
+
+    @Test
+    fun `start also starts controls interactor`() {
+        val engine: Engine = mock()
+        val store = BrowserStore()
+        val view: ReaderViewControlsView = ReaderViewControlsBar(appCompatContext)
+
+        val readerViewFeature = spy(ReaderViewFeature(testContext, engine, store, view))
+        readerViewFeature.start()
+
+        assertNotNull(view.listener)
+    }
+
+    @Test
+    fun `stop also stops controls interactor`() {
+        val engine: Engine = mock()
+        val store = BrowserStore()
+        val view: ReaderViewControlsView = ReaderViewControlsBar(appCompatContext)
+
+        val readerViewFeature = spy(ReaderViewFeature(testContext, engine, store, view))
+        readerViewFeature.stop()
+
+        assertNull(view.listener)
+    }
+
+    @Test
+    fun `showControls invokes the controls presenter`() {
+        val view: ReaderViewControlsView = mock()
+        val feature = spy(ReaderViewFeature(testContext, mock(), mock(), view))
+
+        feature.showControls()
+
+        verify(view).setColorScheme(any())
+        verify(view).setFont(any())
+        verify(view).setFontSize(anyInt())
+        verify(view).showControls()
+    }
+
+    @Test
+    fun `hideControls invokes the controls presenter`() {
+        val view: ReaderViewControlsView = mock()
+        val feature = spy(ReaderViewFeature(testContext, mock(), mock(), view))
+
+        feature.hideControls()
+
+        verify(view).hideControls()
+    }
+
+    @Test
+    fun `triggers readerable check when required`() {
+        val engine: Engine = mock()
+        val tab = createTab("https://www.mozilla.org", id = "test-tab")
+        val store = BrowserStore(initialState = BrowserState(tabs = listOf(tab)))
+        val readerViewFeature = spy(ReaderViewFeature(testContext, engine, store, mock()))
+        readerViewFeature.start()
+
+        store.dispatch(ReaderAction.UpdateReaderableCheckRequiredAction(tab.id, true)).joinBlocking()
+
+        val tabCaptor = argumentCaptor<TabSessionState>()
+        verify(readerViewFeature).checkReaderState(tabCaptor.capture())
+        assertEquals(tab.id, tabCaptor.value.id)
+    }
+
+    @Test
+    fun `connects content script port when required`() {
+        val engine: Engine = mock()
+        val tab = createTab("https://www.mozilla.org", id = "test-tab")
+        val store = BrowserStore(initialState = BrowserState(tabs = listOf(tab), selectedTabId = tab.id))
+        val readerViewFeature = spy(ReaderViewFeature(testContext, engine, store, mock()))
+        readerViewFeature.start()
+
+        store.dispatch(ReaderAction.UpdateReaderConnectRequiredAction(tab.id, true)).joinBlocking()
+        val tabCaptor = argumentCaptor<TabSessionState>()
+        verify(readerViewFeature).connectReaderViewContentScript(tabCaptor.capture())
+        assertEquals(tab.id, tabCaptor.value.id)
+    }
+
+    @Test
+    fun `notifies readerable state changes of selected tab`() {
+        val readerViewStatusChanges = mutableListOf<Pair<Boolean, Boolean>>()
+        val onReaderViewStatusChange: onReaderViewStatusChange = {
+                readerable, active ->
+            readerViewStatusChanges.add(Pair(readerable, active))
+        }
+
+        val engine: Engine = mock()
+        val tab = createTab("https://www.mozilla.org", id = "test-tab")
+        val store = BrowserStore(initialState = BrowserState(tabs = listOf(tab)))
+        val readerViewFeature = spy(ReaderViewFeature(testContext, engine, store, mock(), { "test-uuid" }, onReaderViewStatusChange))
+        readerViewFeature.start()
+        assertTrue(readerViewStatusChanges.isEmpty())
+
+        store.dispatch(TabListAction.SelectTabAction(tab.id)).joinBlocking()
+        store.dispatch(ReaderAction.UpdateReaderableAction(tab.id, true)).joinBlocking()
+        assertEquals(1, readerViewStatusChanges.size)
+        assertEquals(Pair(true, false), readerViewStatusChanges[0])
+
+        store.dispatch(ReaderAction.UpdateReaderActiveAction(tab.id, true)).joinBlocking()
+        assertEquals(2, readerViewStatusChanges.size)
+        assertEquals(Pair(true, true), readerViewStatusChanges[1])
+
+        store.dispatch(ReaderAction.UpdateReaderableAction(tab.id, true)).joinBlocking()
+        // No change -> No notification should have been sent
+        assertEquals(2, readerViewStatusChanges.size)
+
+        store.dispatch(ReaderAction.UpdateReaderActiveAction(tab.id, false)).joinBlocking()
+        assertEquals(3, readerViewStatusChanges.size)
+        assertEquals(Pair(true, false), readerViewStatusChanges[2])
+
+        store.dispatch(ReaderAction.UpdateReaderableAction(tab.id, false)).joinBlocking()
+        assertEquals(4, readerViewStatusChanges.size)
+        assertEquals(Pair(false, false), readerViewStatusChanges[3])
+    }
+
+    @Test
+    fun `show reader view sends message to web extension`() {
+        val port = mock<Port>()
+        val message = argumentCaptor<JSONObject>()
+        val readerViewFeature = prepareFeatureForTest(port, createUUID = { "test-uuid" })
+
+        readerViewFeature.showReaderView()
+        verify(port).postMessage(message.capture())
+        assertEquals(ReaderViewFeature.ACTION_CACHE_PAGE, message.value[ReaderViewFeature.ACTION_MESSAGE_KEY])
+        assertEquals("test-uuid", message.value[ReaderViewFeature.ACTION_VALUE_ID])
+    }
+
+    @Test
+    fun `show reader view dispatches LoadUrlAction and UpdateReaderActiveAction`() {
+        val engine: Engine = mock()
+        val engineSession: EngineSession = mock()
+        val tab = createTab(
+            url = "https://www.mozilla.org",
+            id = "test-tab",
+            engineSession = engineSession,
+        )
+        val store = spy(
+            BrowserStore(
+                initialState = BrowserState(
+                    tabs = listOf(tab),
+                    selectedTabId = tab.id,
+                ),
+            ),
+        )
+
+        val readerViewFeature = ReaderViewFeature(testContext, engine, store, mock(), { "bbbbf5ce-3b0f-4f74-8a1f-986d89bffea7" })
+        readerViewFeature.readerBaseUrl = "moz-extension://012345/"
+        readerViewFeature.showReaderView()
+        verify(store).dispatch(EngineAction.LoadUrlAction(tab.id, "moz-extension://012345/readerview.html?url=https%3A%2F%2Fwww.mozilla.org&id=bbbbf5ce-3b0f-4f74-8a1f-986d89bffea7&colorScheme=light"))
+        verify(store).dispatch(ReaderAction.UpdateReaderActiveAction(tab.id, true))
+    }
+
+    @Test
+    fun `default values used for showing reader view if no config is present`() {
+        val message = ReaderViewFeature.createShowReaderMessage(null)
+        assertEquals(ReaderViewFeature.ACTION_SHOW, message[ReaderViewFeature.ACTION_MESSAGE_KEY])
+        val config = message[ReaderViewFeature.ACTION_VALUE] as JSONObject?
+        assertNotNull(config)
+        assertEquals(FONT_SIZE_DEFAULT, config!![ReaderViewFeature.ACTION_VALUE_SHOW_FONT_SIZE])
+        assertEquals(
+            ReaderViewFeature.FontType.SERIF.value.lowercase(Locale.ROOT),
+            config[ReaderViewFeature.ACTION_VALUE_SHOW_FONT_TYPE],
+        )
+        assertEquals(
+            ReaderViewFeature.ColorScheme.LIGHT.name.lowercase(Locale.ROOT),
+            config[ReaderViewFeature.ACTION_VALUE_SHOW_COLOR_SCHEME],
+        )
+        assertFalse(config.has(ReaderViewFeature.ACTION_VALUE_SCROLLY))
+    }
+
+    @Test
+    fun `pass scrollY for showing reader view`() {
+        val message = ReaderViewFeature.createShowReaderMessage(null, 1234)
+        assertEquals(ReaderViewFeature.ACTION_SHOW, message[ReaderViewFeature.ACTION_MESSAGE_KEY])
+        val config = message[ReaderViewFeature.ACTION_VALUE] as JSONObject?
+        assertNotNull(config)
+        assertEquals(1234, config!![ReaderViewFeature.ACTION_VALUE_SCROLLY])
+    }
+
+    @Test
+    fun `hide reader view navigates back if possible`() {
+        val engine: Engine = mock()
+        val engineSession: EngineSession = mock()
+        val tab = createTab("https://www.mozilla.org", id = "test-tab", readerState = ReaderState(active = true))
+        val store = BrowserStore(initialState = BrowserState(tabs = listOf(tab)))
+        val readerViewFeature = ReaderViewFeature(testContext, engine, store, mock())
+        store.dispatch(EngineAction.LinkEngineSessionAction(tab.id, engineSession)).joinBlocking()
+        store.dispatch(TabListAction.SelectTabAction(tab.id)).joinBlocking()
+        store.dispatch(ContentAction.UpdateBackNavigationStateAction(tab.id, true)).joinBlocking()
+
+        readerViewFeature.hideReaderView()
+        verify(engineSession).goBack(false)
+    }
+
+    @Test
+    fun `hide reader view sends message to web extension`() {
+        val port = mock<Port>()
+        val message = argumentCaptor<JSONObject>()
+        val readerViewFeature = prepareFeatureForTest(
+            readerActivePort = port,
+            tab = createTab("https://www.mozilla.org", id = "test-tab", readerState = ReaderState(active = true)),
+        )
+
+        readerViewFeature.hideReaderView()
+        verify(port, times(1)).postMessage(message.capture())
+        assertEquals(ReaderViewFeature.ACTION_HIDE, message.value[ReaderViewFeature.ACTION_MESSAGE_KEY])
+    }
+
+    @Test
+    fun `hide reader view updates state`() {
+        val engine: Engine = mock()
+        val tab = createTab(
+            url = "https://www.mozilla.org",
+            id = "test-tab",
+            readerState = ReaderState(active = true),
+        )
+
+        val store = spy(
+            BrowserStore(
+                initialState = BrowserState(
+                    tabs = listOf(tab),
+                    selectedTabId = tab.id,
+                ),
+            ),
+        )
+        val readerViewFeature = ReaderViewFeature(testContext, engine, store, mock())
+        readerViewFeature.hideReaderView()
+        verify(store).dispatch(ReaderAction.UpdateReaderActiveAction(tab.id, false))
+        verify(store).dispatch(ReaderAction.UpdateReaderableAction(tab.id, false))
+        verify(store).dispatch(ReaderAction.ClearReaderActiveUrlAction(tab.id))
+    }
+
+    @Test
+    fun `reader state check sends message to web extension`() {
+        val port = mock<Port>()
+        val message = argumentCaptor<JSONObject>()
+        val readerViewFeature = prepareFeatureForTest(port)
+
+        readerViewFeature.checkReaderState()
+        verify(port, times(1)).postMessage(message.capture())
+        assertEquals(ReaderViewFeature.ACTION_CHECK_READER_STATE, message.value[ReaderViewFeature.ACTION_MESSAGE_KEY])
+    }
+
+    @Test
+    fun `color scheme config change persists and is sent to web extension`() {
+        val port = mock<Port>()
+        val message = argumentCaptor<JSONObject>()
+
+        val readerViewFeature = prepareFeatureForTest(readerActivePort = port)
+        val prefs = testContext.getSharedPreferences(ReaderViewFeature.SHARED_PREF_NAME, Context.MODE_PRIVATE)
+
+        readerViewFeature.config.colorScheme = ReaderViewFeature.ColorScheme.DARK
+        assertEquals(ReaderViewFeature.ColorScheme.DARK.name, prefs.getString(ReaderViewFeature.COLOR_SCHEME_KEY, null))
+
+        verify(port, times(1)).postMessage(message.capture())
+        assertEquals(ReaderViewFeature.ACTION_SET_COLOR_SCHEME, message.value[ReaderViewFeature.ACTION_MESSAGE_KEY])
+        assertEquals(ReaderViewFeature.ColorScheme.DARK.name, message.value[ReaderViewFeature.ACTION_VALUE])
+
+        // Setting to the same value should not cause another message to be sent
+        readerViewFeature.config.colorScheme = ReaderViewFeature.ColorScheme.DARK
+        verify(port, times(1)).postMessage(message.capture())
+    }
+
+    @Test
+    fun `font type config change persists and is sent to web extension`() {
+        val port = mock<Port>()
+        val message = argumentCaptor<JSONObject>()
+
+        val readerViewFeature = prepareFeatureForTest(readerActivePort = port)
+        val prefs = testContext.getSharedPreferences(ReaderViewFeature.SHARED_PREF_NAME, Context.MODE_PRIVATE)
+
+        readerViewFeature.config.fontType = ReaderViewFeature.FontType.SANSSERIF
+        assertEquals(ReaderViewFeature.FontType.SANSSERIF.name, prefs.getString(ReaderViewFeature.FONT_TYPE_KEY, null))
+
+        verify(port, times(1)).postMessage(message.capture())
+        assertEquals(ReaderViewFeature.ACTION_SET_FONT_TYPE, message.value[ReaderViewFeature.ACTION_MESSAGE_KEY])
+        assertEquals(ReaderViewFeature.FontType.SANSSERIF.value, message.value[ReaderViewFeature.ACTION_VALUE])
+
+        // Setting to the same value should not cause another message to be sent
+        readerViewFeature.config.fontType = ReaderViewFeature.FontType.SANSSERIF
+        verify(port, times(1)).postMessage(message.capture())
+    }
+
+    @Test
+    fun `font size config change persists and is sent to web extension`() {
+        val port = mock<Port>()
+        val message = argumentCaptor<JSONObject>()
+
+        val readerViewFeature = prepareFeatureForTest(readerActivePort = port)
+        val prefs = testContext.getSharedPreferences(ReaderViewFeature.SHARED_PREF_NAME, Context.MODE_PRIVATE)
+
+        readerViewFeature.config.fontSize = 4
+        assertEquals(4, prefs.getInt(ReaderViewFeature.FONT_SIZE_KEY, 0))
+
+        verify(port, times(1)).postMessage(message.capture())
+        assertEquals(ReaderViewFeature.ACTION_CHANGE_FONT_SIZE, message.value[ReaderViewFeature.ACTION_MESSAGE_KEY])
+        assertEquals(1, message.value[ReaderViewFeature.ACTION_VALUE])
+
+        // Setting to the same value should not cause another message to be sent
+        readerViewFeature.config.fontSize = 4
+        verify(port, times(1)).postMessage(message.capture())
+    }
+
+    @Test
+    fun `on back pressed hides controls`() {
+        val engine: Engine = mock()
+        val engineSession: EngineSession = mock()
+
+        val tab = createTab("https://www.mozilla.org", id = "test-tab")
+        val store = BrowserStore(BrowserState(tabs = listOf(tab)))
+        store.dispatch(EngineAction.LinkEngineSessionAction(tab.id, engineSession)).joinBlocking()
+        store.dispatch(TabListAction.SelectTabAction(tab.id)).joinBlocking()
+
+        val controlsView: ReaderViewControlsView = mock()
+        val view: View = mock()
+        whenever(controlsView.asView()).thenReturn(view)
+
+        val readerViewFeature = spy(ReaderViewFeature(testContext, engine, store, controlsView))
+        assertFalse(readerViewFeature.onBackPressed())
+
+        store.dispatch(ReaderAction.UpdateReaderActiveAction(tab.id, true)).joinBlocking()
+        whenever(view.visibility).thenReturn(View.VISIBLE)
+        assertTrue(readerViewFeature.onBackPressed())
+        verify(readerViewFeature, never()).hideReaderView(any())
+        verify(readerViewFeature, times(1)).hideControls()
+
+        whenever(view.visibility).thenReturn(View.GONE)
+        assertTrue(readerViewFeature.onBackPressed())
+        verify(readerViewFeature, times(1)).hideReaderView(any())
+        verify(readerViewFeature, times(1)).hideControls()
+    }
+
+    @Test
+    fun `state is updated when reader state arrives`() {
+        val engine: Engine = mock()
+        val view: ReaderViewControlsView = mock()
+        val engineSession: EngineSession = mock()
+        val ext: WebExtension = mock()
+        val controller: WebExtensionController = mock()
+        val tab = createTab(
+            url = "https://www.mozilla.org",
+            id = "test-tab",
+            engineSession = engineSession,
+        )
+        val store = spy(
+            BrowserStore(
+                initialState = BrowserState(
+                    tabs = listOf(tab),
+                    selectedTabId = tab.id,
+                ),
+            ),
+        )
+
+        WebExtensionController.installedExtensions[ReaderViewFeature.READER_VIEW_EXTENSION_ID] = ext
+
+        val port: Port = mock()
+        whenever(port.engineSession).thenReturn(engineSession)
+        whenever(ext.getConnectedPort(any(), any())).thenReturn(port)
+
+        whenever(controller.portConnected(any(), any())).thenReturn(true)
+        val readerViewFeature = spy(ReaderViewFeature(testContext, engine, store, view))
+        readerViewFeature.extensionController = controller
+
+        val messageHandler = argumentCaptor<MessageHandler>()
+        val message = argumentCaptor<JSONObject>()
+        readerViewFeature.start()
+        store.dispatch(ReaderAction.UpdateReaderConnectRequiredAction(tab.id, true)).joinBlocking()
+        verify(controller).registerContentMessageHandler(
+            eq(engineSession),
+            messageHandler.capture(),
+            eq(READER_VIEW_ACTIVE_CONTENT_PORT),
+        )
+
+        messageHandler.value.onPortConnected(port)
+        verify(port).postMessage(message.capture())
+        assertEquals(ReaderViewFeature.ACTION_CHECK_READER_STATE, message.value[ReaderViewFeature.ACTION_MESSAGE_KEY])
+
+        val readerStateMessage = JSONObject()
+            .put("readerable", true)
+            .put("baseUrl", "moz-extension://")
+            .put("activeUrl", "http://mozilla.org/article")
+        messageHandler.value.onPortMessage(readerStateMessage, port)
+        verify(store).dispatch(ReaderAction.UpdateReaderableAction(tab.id, true))
+        verify(store).dispatch(ReaderAction.UpdateReaderBaseUrlAction(tab.id, "moz-extension://"))
+        verify(store).dispatch(ReaderAction.UpdateReaderActiveUrlAction(tab.id, "http://mozilla.org/article"))
+    }
+
+    @Test
+    fun `reader is shown when state arrives from reader page`() {
+        val engine: Engine = mock()
+        val view: ReaderViewControlsView = mock()
+        val engineSession: EngineSession = mock()
+        val ext: WebExtension = mock()
+        val controller: WebExtensionController = mock()
+        val tab = createTab(
+            url = "https://www.mozilla.org",
+            id = "test-tab",
+            engineSession = engineSession,
+        )
+        val store = spy(
+            BrowserStore(
+                initialState = BrowserState(
+                    tabs = listOf(tab),
+                    selectedTabId = tab.id,
+                ),
+            ),
+        )
+
+        WebExtensionController.installedExtensions[READER_VIEW_EXTENSION_ID] = ext
+
+        val port: Port = mock()
+        whenever(port.engineSession).thenReturn(engineSession)
+        whenever(ext.getConnectedPort(any(), any())).thenReturn(port)
+
+        whenever(controller.portConnected(any(), any())).thenReturn(true)
+        val readerViewFeature = spy(ReaderViewFeature(testContext, engine, store, view))
+        readerViewFeature.extensionController = controller
+
+        val messageHandler = argumentCaptor<MessageHandler>()
+        val message = argumentCaptor<JSONObject>()
+        readerViewFeature.start()
+
+        store.dispatch(ReaderAction.UpdateReaderConnectRequiredAction(tab.id, true)).joinBlocking()
+        verify(controller).registerContentMessageHandler(
+            eq(engineSession),
+            messageHandler.capture(),
+            eq(READER_VIEW_ACTIVE_CONTENT_PORT),
+        )
+        messageHandler.value.onPortConnected(port)
+
+        val readerStateMessage = JSONObject()
+            .put("readerable", true)
+            .put("baseUrl", "moz-extension://")
+            .put("activeUrl", "http://mozilla.org/article")
+        messageHandler.value.onPortMessage(readerStateMessage, port)
+        verify(port, times(2)).postMessage(message.capture())
+        assertEquals(ReaderViewFeature.ACTION_CHECK_READER_STATE, message.allValues[0][ReaderViewFeature.ACTION_MESSAGE_KEY])
+        assertEquals(ReaderViewFeature.ACTION_SHOW, message.allValues[1][ReaderViewFeature.ACTION_MESSAGE_KEY])
+    }
+
+    private fun prepareFeatureForTest(
+        contentPort: Port? = null,
+        readerActivePort: Port? = null,
+        tab: TabSessionState = createTab("https://www.mozilla.org", id = "test-tab"),
+        engineSession: EngineSession = mock(),
+        controller: WebExtensionController? = null,
+        createUUID: UUIDCreator = { "" },
+    ): ReaderViewFeature {
+        val engine: Engine = mock()
+
+        val store = BrowserStore(BrowserState(tabs = listOf(tab)))
+        store.dispatch(EngineAction.LinkEngineSessionAction(tab.id, engineSession)).joinBlocking()
+        store.dispatch(TabListAction.SelectTabAction(tab.id)).joinBlocking()
+
+        val ext: WebExtension = mock()
+        contentPort?.let {
+            whenever(ext.getConnectedPort(eq(ReaderViewFeature.READER_VIEW_CONTENT_PORT), any()))
+                .thenReturn(contentPort)
+        }
+        readerActivePort?.let {
+            whenever(ext.getConnectedPort(eq(ReaderViewFeature.READER_VIEW_ACTIVE_CONTENT_PORT), any()))
+                .thenReturn(readerActivePort)
+        }
+        WebExtensionController.installedExtensions[ReaderViewFeature.READER_VIEW_EXTENSION_ID] = ext
+
+        val feature = ReaderViewFeature(testContext, engine, store, mock(), createUUID)
+        if (controller != null) {
+            feature.extensionController = controller
+        }
+        return feature
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/ReaderViewMiddlewareTest.kt b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/ReaderViewMiddlewareTest.kt
new file mode 100644
index 0000000000..5573954e86
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/ReaderViewMiddlewareTest.kt
@@ -0,0 +1,187 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import mozilla.components.browser.state.action.ContentAction
+import mozilla.components.browser.state.action.EngineAction
+import mozilla.components.browser.state.action.ReaderAction
+import mozilla.components.browser.state.action.TabListAction
+import mozilla.components.browser.state.selector.findTab
+import mozilla.components.browser.state.state.BrowserState
+import mozilla.components.browser.state.state.ReaderState
+import mozilla.components.browser.state.state.createTab
+import mozilla.components.browser.state.store.BrowserStore
+import mozilla.components.concept.engine.EngineSession
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.READER_VIEW_EXTENSION_ID
+import mozilla.components.support.test.ext.joinBlocking
+import mozilla.components.support.test.mock
+import mozilla.components.support.webextensions.WebExtensionController
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertSame
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mockito.never
+import org.mockito.Mockito.verify
+
+@RunWith(AndroidJUnit4::class)
+class ReaderViewMiddlewareTest {
+
+    @Test
+    fun `state is updated to connect content script port when tab is added and engine session linked`() {
+        val store = BrowserStore(
+            initialState = BrowserState(),
+            middleware = listOf(ReaderViewMiddleware()),
+        )
+
+        val tab = createTab("https://www.mozilla.org", id = "test-tab")
+        store.dispatch(TabListAction.AddTabAction(tab)).joinBlocking()
+        store.dispatch(EngineAction.LinkEngineSessionAction(tab.id, mock())).joinBlocking()
+
+        val readerState = store.state.findTab(tab.id)!!.readerState
+        assertTrue(readerState.connectRequired)
+    }
+
+    @Test
+    fun `state is updated to disconnect content script port when tab is removed`() {
+        val tab = createTab("https://www.mozilla.org", id = "test-tab")
+        val engineSession: EngineSession = mock()
+        val controller: WebExtensionController = mock()
+        val middleware = ReaderViewMiddleware().apply {
+            extensionController = controller
+        }
+        val store = BrowserStore(
+            initialState = BrowserState(tabs = listOf(tab)),
+            middleware = listOf(middleware),
+        )
+
+        store.dispatch(EngineAction.LinkEngineSessionAction(tab.id, engineSession)).joinBlocking()
+        assertSame(engineSession, store.state.findTab(tab.id)?.engineState?.engineSession)
+        verify(controller, never()).disconnectPort(engineSession, READER_VIEW_EXTENSION_ID)
+
+        store.dispatch(EngineAction.UnlinkEngineSessionAction(tab.id)).joinBlocking()
+        assertNull(store.state.findTab(tab.id)?.engineState?.engineSession)
+        verify(controller).disconnectPort(engineSession, READER_VIEW_EXTENSION_ID)
+    }
+
+    @Test
+    fun `state is updated to reconnect and trigger readerable check when new tab is selected`() {
+        val tab1 = createTab("https://www.mozilla.org", id = "test-tab1")
+        val tab2 = createTab(
+            "https://www.firefox.com",
+            id = "test-tab2",
+            readerState = ReaderState(readerable = true),
+        )
+        val store = BrowserStore(
+            initialState = BrowserState(tabs = listOf(tab1, tab2)),
+            middleware = listOf(ReaderViewMiddleware()),
+        )
+        assertFalse(store.state.findTab(tab1.id)!!.readerState.connectRequired)
+        assertFalse(store.state.findTab(tab1.id)!!.readerState.checkRequired)
+        assertFalse(store.state.findTab(tab1.id)!!.readerState.readerable)
+        assertFalse(store.state.findTab(tab2.id)!!.readerState.connectRequired)
+        assertFalse(store.state.findTab(tab2.id)!!.readerState.checkRequired)
+        assertTrue(store.state.findTab(tab2.id)!!.readerState.readerable)
+
+        store.dispatch(TabListAction.SelectTabAction(tab2.id)).joinBlocking()
+        assertFalse(store.state.findTab(tab1.id)!!.readerState.readerable)
+        assertFalse(store.state.findTab(tab1.id)!!.readerState.checkRequired)
+        assertFalse(store.state.findTab(tab1.id)!!.readerState.connectRequired)
+        assertFalse(store.state.findTab(tab2.id)!!.readerState.readerable)
+        assertTrue(store.state.findTab(tab2.id)!!.readerState.checkRequired)
+        assertTrue(store.state.findTab(tab2.id)!!.readerState.connectRequired)
+    }
+
+    @Test
+    fun `state is updated to trigger readerable check when URL changes`() {
+        val tab = createTab("https://www.mozilla.org", id = "test-tab1")
+        val store = BrowserStore(
+            initialState = BrowserState(tabs = listOf(tab)),
+            middleware = listOf(ReaderViewMiddleware()),
+        )
+        assertFalse(store.state.findTab(tab.id)!!.readerState.checkRequired)
+
+        store.dispatch(ContentAction.UpdateUrlAction(tab.id, "https://www.firefox.com")).joinBlocking()
+        assertTrue(store.state.findTab(tab.id)!!.readerState.checkRequired)
+    }
+
+    @Test
+    fun `state is updated to enter and leave reader view when URL changes`() {
+        val tab = createTab(
+            "https://www.mozilla.org",
+            id = "test-tab1",
+            readerState = ReaderState(active = false, baseUrl = "moz-extension://123"),
+        )
+        val store = BrowserStore(
+            initialState = BrowserState(tabs = listOf(tab)),
+            middleware = listOf(ReaderViewMiddleware()),
+        )
+        assertFalse(store.state.findTab(tab.id)!!.readerState.active)
+
+        store.dispatch(ContentAction.UpdateUrlAction(tab.id, "moz-extension://123?url=articleLink")).joinBlocking()
+        assertTrue(store.state.findTab(tab.id)!!.readerState.active)
+
+        store.dispatch(ContentAction.UpdateUrlAction(tab.id, "https://www.firefox.com")).joinBlocking()
+        assertFalse(store.state.findTab(tab.id)!!.readerState.active)
+        assertFalse(store.state.findTab(tab.id)!!.readerState.readerable)
+        assertTrue(store.state.findTab(tab.id)!!.readerState.checkRequired)
+        assertNull(store.state.findTab(tab.id)!!.readerState.activeUrl)
+    }
+
+    @Test
+    fun `state is updated to mask extension page URL when navigating to reader view page`() {
+        val tab = createTab(
+            "https://www.mozilla.org",
+            id = "test-tab1",
+            readerState = ReaderState(
+                active = true,
+                baseUrl = "moz-extension://123",
+                activeUrl = "https://mozilla.org/article1",
+            ),
+        )
+        val store = BrowserStore(
+            initialState = BrowserState(tabs = listOf(tab)),
+            middleware = listOf(ReaderViewMiddleware()),
+        )
+
+        store.dispatch(
+            ContentAction.UpdateUrlAction(
+                tab.id,
+                "moz-extension://123?url=https%3A%2F%2Fmozilla.org%2Farticle1",
+            ),
+        ).joinBlocking()
+
+        assertTrue(store.state.findTab(tab.id)!!.readerState.active)
+        assertEquals("https://mozilla.org/article1", store.state.findTab(tab.id)!!.content.url)
+    }
+
+    @Test
+    fun `state is updated to mask extension page URL when reader view connects`() {
+        val tab = createTab(
+            "moz-extension://123?url=https%3A%2F%2Fmozilla.org%2Farticle1",
+            id = "test-tab1",
+            readerState = ReaderState(
+                active = true,
+                baseUrl = "moz-extension://123",
+            ),
+        )
+        val store = BrowserStore(
+            initialState = BrowserState(tabs = listOf(tab)),
+            middleware = listOf(ReaderViewMiddleware()),
+        )
+
+        store.dispatch(
+            ReaderAction.UpdateReaderActiveUrlAction(
+                tab.id,
+                activeUrl = "https://mozilla.org/article1",
+            ),
+        ).joinBlocking()
+
+        assertEquals("https://mozilla.org/article1", store.state.findTab(tab.id)!!.content.url)
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/internal/ReaderViewConfigTest.kt b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/internal/ReaderViewConfigTest.kt
new file mode 100644
index 0000000000..13b0ec9b25
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/internal/ReaderViewConfigTest.kt
@@ -0,0 +1,108 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview.internal
+
+import android.content.Context
+import android.content.SharedPreferences
+import android.content.res.Configuration
+import android.content.res.Resources
+import mozilla.components.feature.readerview.ReaderViewFeature
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.COLOR_SCHEME_KEY
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.FONT_SIZE_DEFAULT
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.FONT_SIZE_KEY
+import mozilla.components.feature.readerview.ReaderViewFeature.Companion.FONT_TYPE_KEY
+import mozilla.components.support.test.eq
+import mozilla.components.support.test.whenever
+import org.json.JSONObject
+import org.junit.Assert.assertEquals
+import org.junit.Before
+import org.junit.Test
+import org.mockito.ArgumentMatchers.anyInt
+import org.mockito.Mock
+import org.mockito.Mockito.anyString
+import org.mockito.Mockito.never
+import org.mockito.Mockito.times
+import org.mockito.Mockito.verify
+import org.mockito.MockitoAnnotations
+
+class ReaderViewConfigTest {
+
+    @Mock private lateinit var context: Context
+
+    @Mock private lateinit var prefs: SharedPreferences
+
+    @Mock private lateinit var editor: SharedPreferences.Editor
+
+    @Mock private lateinit var sendConfigMessage: (JSONObject) -> Unit
+
+    @Mock private lateinit var resources: Resources
+
+    @Mock private lateinit var configuration: Configuration
+
+    private lateinit var config: ReaderViewConfig
+
+    @Before
+    fun setup() {
+        MockitoAnnotations.openMocks(this)
+        whenever(context.getSharedPreferences(anyString(), anyInt())).thenReturn(prefs)
+        whenever(prefs.edit()).thenReturn(editor)
+        whenever(context.resources).thenReturn(resources)
+        whenever(resources.configuration).thenReturn(configuration)
+        configuration.uiMode = Configuration.UI_MODE_NIGHT_UNDEFINED
+
+        config = ReaderViewConfig(context, sendConfigMessage)
+    }
+
+    @Test
+    fun `color scheme should read from shared prefs`() {
+        whenever(prefs.getString(COLOR_SCHEME_KEY, "LIGHT")).thenReturn("SEPIA")
+        verify(prefs, never()).getString(eq(COLOR_SCHEME_KEY), anyString())
+
+        assertEquals(ReaderViewFeature.ColorScheme.SEPIA, config.colorScheme)
+        verify(prefs, times(1)).getString(eq(COLOR_SCHEME_KEY), anyString())
+
+        assertEquals(ReaderViewFeature.ColorScheme.SEPIA, config.colorScheme)
+        verify(prefs, times(1)).getString(eq(COLOR_SCHEME_KEY), anyString())
+    }
+
+    @Test
+    fun `color scheme default should respect active dark mode`() {
+        whenever(prefs.getString(COLOR_SCHEME_KEY, "LIGHT")).thenReturn("LIGHT")
+        whenever(prefs.getString(COLOR_SCHEME_KEY, "DARK")).thenReturn("DARK")
+        // reset config and test for a default of DARK for dark mode
+        configuration.uiMode = Configuration.UI_MODE_NIGHT_YES
+        config = ReaderViewConfig(context, sendConfigMessage)
+        assertEquals(ReaderViewFeature.ColorScheme.DARK, config.colorScheme)
+        // reset config and test for a default of LIGHT for explicit non-dark (light) mode
+        configuration.uiMode = Configuration.UI_MODE_NIGHT_NO
+        config = ReaderViewConfig(context, sendConfigMessage)
+        assertEquals(ReaderViewFeature.ColorScheme.LIGHT, config.colorScheme)
+        // test for UI_MODE_NIGHT_UNDEFINED was already done in the above test function
+    }
+
+    @Test
+    fun `font type should read from shared prefs`() {
+        whenever(prefs.getString(FONT_TYPE_KEY, "SERIF")).thenReturn("SANSSERIF")
+        verify(prefs, never()).getString(eq(FONT_TYPE_KEY), anyString())
+
+        assertEquals(ReaderViewFeature.FontType.SANSSERIF, config.fontType)
+        verify(prefs, times(1)).getString(eq(FONT_TYPE_KEY), anyString())
+
+        assertEquals(ReaderViewFeature.FontType.SANSSERIF, config.fontType)
+        verify(prefs, times(1)).getString(eq(FONT_TYPE_KEY), anyString())
+    }
+
+    @Test
+    fun `font size should read from shared prefs`() {
+        whenever(prefs.getInt(FONT_SIZE_KEY, FONT_SIZE_DEFAULT)).thenReturn(4)
+        verify(prefs, never()).getInt(eq(FONT_SIZE_KEY), anyInt())
+
+        assertEquals(4, config.fontSize)
+        verify(prefs, times(1)).getInt(eq(FONT_SIZE_KEY), anyInt())
+
+        assertEquals(4, config.fontSize)
+        verify(prefs, times(1)).getInt(eq(FONT_SIZE_KEY), anyInt())
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/internal/ReaderViewControlsInteractorTest.kt b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/internal/ReaderViewControlsInteractorTest.kt
new file mode 100644
index 0000000000..0db805b7c3
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/internal/ReaderViewControlsInteractorTest.kt
@@ -0,0 +1,90 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview.internal
+
+import mozilla.components.feature.readerview.ReaderViewFeature
+import mozilla.components.feature.readerview.view.ReaderViewControlsView
+import mozilla.components.support.test.mock
+import mozilla.components.support.test.whenever
+import org.junit.Test
+import org.mockito.Mockito.verify
+import org.mockito.Mockito.verifyNoMoreInteractions
+
+class ReaderViewControlsInteractorTest {
+
+    @Test
+    fun `interactor assigns listener to self`() {
+        val view = mock<ReaderViewControlsView>()
+        val interactor = ReaderViewControlsInteractor(view, mock())
+
+        interactor.start()
+
+        verify(view).listener = interactor
+        verifyNoMoreInteractions(view)
+    }
+
+    @Test
+    fun `interactor un-assigns self from listener`() {
+        val view = mock<ReaderViewControlsView>()
+        val interactor = ReaderViewControlsInteractor(view, mock())
+
+        interactor.stop()
+
+        verify(view).listener = null
+        verifyNoMoreInteractions(view)
+    }
+
+    @Test
+    fun `update config on change`() {
+        val config: ReaderViewConfig = mock()
+        val interactor = ReaderViewControlsInteractor(mock(), config)
+
+        interactor.onFontChanged(ReaderViewFeature.FontType.SANSSERIF)
+
+        verify(config).fontType = ReaderViewFeature.FontType.SANSSERIF
+
+        interactor.onColorSchemeChanged(ReaderViewFeature.ColorScheme.SEPIA)
+
+        verify(config).colorScheme = ReaderViewFeature.ColorScheme.SEPIA
+    }
+
+    @Test
+    fun `update config when font size increased`() {
+        val config: ReaderViewConfig = mock()
+        val interactor = ReaderViewControlsInteractor(mock(), config)
+
+        whenever(config.fontSize).thenReturn(7)
+        interactor.onFontSizeIncreased()
+        verify(config).fontSize = 8
+
+        whenever(config.fontSize).thenReturn(8)
+        interactor.onFontSizeIncreased()
+        verify(config).fontSize = 9
+
+        // Can't increase past MAX_FONT_SIZE
+        whenever(config.fontSize).thenReturn(9)
+        interactor.onFontSizeIncreased()
+        verify(config).fontSize = 9
+    }
+
+    @Test
+    fun `update config when font size decreased`() {
+        val config: ReaderViewConfig = mock()
+        val interactor = ReaderViewControlsInteractor(mock(), config)
+
+        whenever(config.fontSize).thenReturn(3)
+        interactor.onFontSizeDecreased()
+        verify(config).fontSize = 2
+
+        whenever(config.fontSize).thenReturn(2)
+        interactor.onFontSizeDecreased()
+        verify(config).fontSize = 1
+
+        // Can't decrease below MIN_FONT_SIZE
+        whenever(config.fontSize).thenReturn(1)
+        interactor.onFontSizeDecreased()
+        verify(config).fontSize = 1
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/internal/ReaderViewControlsPresenterTest.kt b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/internal/ReaderViewControlsPresenterTest.kt
new file mode 100644
index 0000000000..399bceaea6
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/internal/ReaderViewControlsPresenterTest.kt
@@ -0,0 +1,61 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview.internal
+
+import android.view.View
+import mozilla.components.feature.readerview.view.ReaderViewControlsView
+import mozilla.components.support.test.any
+import mozilla.components.support.test.mock
+import mozilla.components.support.test.whenever
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.mockito.Mockito.verify
+
+class ReaderViewControlsPresenterTest {
+
+    @Test
+    fun `start applies config to view`() {
+        val config: ReaderViewConfig = mock()
+        val view = mock<ReaderViewControlsView>()
+        val presenter = ReaderViewControlsPresenter(view, config)
+
+        whenever(config.colorScheme).thenReturn(mock())
+        whenever(config.fontSize).thenReturn(5)
+        whenever(config.fontType).thenReturn(mock())
+
+        presenter.show()
+
+        verify(view).tryInflate()
+        verify(view).setColorScheme(any())
+        verify(view).setFontSize(5)
+        verify(view).setFont(any())
+        verify(view).showControls()
+    }
+
+    @Test
+    fun `are controls visible`() {
+        val controlsView = mock<ReaderViewControlsView>()
+        val view = mock<View>()
+        whenever(controlsView.asView()).thenReturn(view)
+        val presenter = ReaderViewControlsPresenter(controlsView, mock())
+
+        whenever(view.visibility).thenReturn(View.GONE)
+        assertFalse(presenter.areControlsVisible())
+
+        whenever(view.visibility).thenReturn(View.VISIBLE)
+        assertTrue(presenter.areControlsVisible())
+    }
+
+    @Test
+    fun `hide updates the visibility of the controls`() {
+        val view = mock<ReaderViewControlsView>()
+        val presenter = ReaderViewControlsPresenter(view, mock())
+
+        presenter.hide()
+
+        verify(view).hideControls()
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/view/ReaderViewControlsBarTest.kt b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/view/ReaderViewControlsBarTest.kt
new file mode 100644
index 0000000000..0af16267b9
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/components/feature/readerview/view/ReaderViewControlsBarTest.kt
@@ -0,0 +1,204 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.components.feature.readerview.view
+
+import android.view.View
+import androidx.appcompat.widget.AppCompatButton
+import androidx.appcompat.widget.AppCompatRadioButton
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import mozilla.components.feature.readerview.R
+import mozilla.components.feature.readerview.ReaderViewFeature
+import mozilla.components.support.test.mock
+import mozilla.ext.appCompatContext
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mockito.never
+import org.mockito.Mockito.spy
+import org.mockito.Mockito.verify
+
+@RunWith(AndroidJUnit4::class)
+class ReaderViewControlsBarTest {
+
+    @Test
+    fun `flags are set on UI init`() {
+        val bar = spy(ReaderViewControlsBar(appCompatContext))
+
+        assertTrue(bar.isFocusableInTouchMode)
+        assertTrue(bar.isClickable)
+    }
+
+    @Test
+    fun `font options are set`() {
+        val bar = ReaderViewControlsBar(appCompatContext)
+        bar.tryInflate()
+
+        val serifButton = bar.findViewById<AppCompatRadioButton>(R.id.mozac_feature_readerview_font_serif)
+        val sansSerifButton = bar.findViewById<AppCompatRadioButton>(R.id.mozac_feature_readerview_font_sans_serif)
+
+        assertFalse(serifButton.isChecked)
+
+        bar.setFont(ReaderViewFeature.FontType.SERIF)
+
+        assertTrue(serifButton.isChecked)
+
+        assertFalse(sansSerifButton.isChecked)
+
+        bar.setFont(ReaderViewFeature.FontType.SANSSERIF)
+
+        assertTrue(sansSerifButton.isChecked)
+    }
+
+    @Test
+    fun `font size buttons are enabled or disabled`() {
+        val bar = ReaderViewControlsBar(appCompatContext)
+        bar.tryInflate()
+
+        val sizeDecreaseButton = bar.findViewById<AppCompatButton>(R.id.mozac_feature_readerview_font_size_decrease)
+        val sizeIncreaseButton = bar.findViewById<AppCompatButton>(R.id.mozac_feature_readerview_font_size_increase)
+
+        bar.setFontSize(5)
+
+        assertTrue(sizeDecreaseButton.isEnabled)
+        assertTrue(sizeIncreaseButton.isEnabled)
+
+        bar.setFontSize(1)
+
+        assertFalse(sizeDecreaseButton.isEnabled)
+        assertTrue(sizeIncreaseButton.isEnabled)
+
+        bar.setFontSize(0)
+
+        assertFalse(sizeDecreaseButton.isEnabled)
+        assertTrue(sizeIncreaseButton.isEnabled)
+
+        bar.setFontSize(9)
+
+        assertTrue(sizeDecreaseButton.isEnabled)
+        assertFalse(sizeIncreaseButton.isEnabled)
+
+        bar.setFontSize(10)
+
+        assertTrue(sizeDecreaseButton.isEnabled)
+        assertFalse(sizeIncreaseButton.isEnabled)
+    }
+
+    @Test
+    fun `color scheme is set`() {
+        val bar = ReaderViewControlsBar(appCompatContext)
+        bar.tryInflate()
+
+        val colorOptionDark = bar.findViewById<AppCompatRadioButton>(R.id.mozac_feature_readerview_color_dark)
+        val colorOptionSepia = bar.findViewById<AppCompatRadioButton>(R.id.mozac_feature_readerview_color_sepia)
+        val colorOptionLight = bar.findViewById<AppCompatRadioButton>(R.id.mozac_feature_readerview_color_light)
+
+        bar.setColorScheme(ReaderViewFeature.ColorScheme.DARK)
+
+        assertTrue(colorOptionDark.isChecked)
+        assertFalse(colorOptionSepia.isChecked)
+        assertFalse(colorOptionLight.isChecked)
+
+        bar.setColorScheme(ReaderViewFeature.ColorScheme.SEPIA)
+
+        assertFalse(colorOptionDark.isChecked)
+        assertTrue(colorOptionSepia.isChecked)
+        assertFalse(colorOptionLight.isChecked)
+
+        bar.setColorScheme(ReaderViewFeature.ColorScheme.LIGHT)
+
+        assertFalse(colorOptionDark.isChecked)
+        assertFalse(colorOptionSepia.isChecked)
+        assertTrue(colorOptionLight.isChecked)
+    }
+
+    @Test
+    fun `showControls updates visibility and requests focus`() {
+        val bar = spy(ReaderViewControlsBar(appCompatContext))
+
+        bar.showControls()
+
+        verify(bar).visibility = View.VISIBLE
+        verify(bar).requestFocus()
+    }
+
+    @Test
+    fun `hideControls updates visibility`() {
+        val bar = spy(ReaderViewControlsBar(appCompatContext))
+
+        bar.hideControls()
+
+        verify(bar).visibility = View.GONE
+    }
+
+    @Test
+    fun `when focus is lost, hide controls`() {
+        val bar = spy(ReaderViewControlsBar(appCompatContext))
+
+        bar.clearFocus()
+
+        verify(bar, never()).hideControls()
+
+        bar.requestFocus()
+
+        bar.clearFocus()
+
+        verify(bar).hideControls()
+    }
+
+    @Test
+    fun `listener is invoked when clicking a font option`() {
+        val bar = ReaderViewControlsBar(appCompatContext)
+        val listener: ReaderViewControlsView.Listener = mock()
+
+        assertNull(bar.listener)
+
+        bar.listener = listener
+        bar.tryInflate()
+
+        bar.findViewById<AppCompatRadioButton>(R.id.mozac_feature_readerview_font_sans_serif).performClick()
+
+        verify(listener).onFontChanged(ReaderViewFeature.FontType.SANSSERIF)
+    }
+
+    @Test
+    fun `listener is invoked when clicking a font size option`() {
+        val bar = ReaderViewControlsBar(appCompatContext)
+        val listener: ReaderViewControlsView.Listener = mock()
+
+        assertNull(bar.listener)
+
+        bar.listener = listener
+        bar.tryInflate()
+
+        bar.findViewById<AppCompatButton>(R.id.mozac_feature_readerview_font_size_increase).performClick()
+
+        verify(listener).onFontSizeIncreased()
+    }
+
+    @Test
+    fun `listener is invoked when clicking a color scheme`() {
+        val bar = ReaderViewControlsBar(appCompatContext)
+        val listener: ReaderViewControlsView.Listener = mock()
+
+        assertNull(bar.listener)
+
+        bar.listener = listener
+        bar.tryInflate()
+
+        bar.findViewById<AppCompatRadioButton>(R.id.mozac_feature_readerview_color_sepia).performClick()
+
+        verify(listener).onColorSchemeChanged(ReaderViewFeature.ColorScheme.SEPIA)
+    }
+
+    @Test
+    fun `tryInflate is only successfully once`() {
+        val bar = ReaderViewControlsBar(appCompatContext)
+
+        assertTrue(bar.tryInflate())
+        assertFalse(bar.tryInflate())
+    }
+}
diff --git a/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/ext/context.kt b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/ext/context.kt
new file mode 100644
index 0000000000..64575ce095
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/test/java/mozilla/ext/context.kt
@@ -0,0 +1,18 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package mozilla.ext
+
+import android.content.Context
+import androidx.appcompat.R
+import androidx.appcompat.view.ContextThemeWrapper
+import mozilla.components.support.test.robolectric.testContext
+
+/**
+ * `testContext` wrapped with AppCompat theme.
+ *
+ * Useful for views that uses theme attributes, for example.
+ */
+internal val appCompatContext: Context
+    get() = ContextThemeWrapper(testContext, R.style.Theme_AppCompat)
diff --git a/mobile/android/android-components/components/feature/readerview/src/test/resources/mockito-extensions/org.mockito.plugins.MockMaker b/mobile/android/android-components/components/feature/readerview/src/test/resources/mockito-extensions/org.mockito.plugins.MockMaker
new file mode 100644
index 0000000000..49324d83c5
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/test/resources/mockito-extensions/org.mockito.plugins.MockMaker
@@ -0,0 +1,3 @@
+mock-maker-inline
+// This allows mocking final classes (classes are final by default in Kotlin)
+
diff --git a/mobile/android/android-components/components/feature/readerview/src/test/resources/robolectric.properties b/mobile/android/android-components/components/feature/readerview/src/test/resources/robolectric.properties
new file mode 100644
index 0000000000..932b01b9eb
--- /dev/null
+++ b/mobile/android/android-components/components/feature/readerview/src/test/resources/robolectric.properties
@@ -0,0 +1 @@
+sdk=28