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diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/natural-size-orientation.html b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/natural-size-orientation.html
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+++ b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/natural-size-orientation.html
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+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>naturalWidth and naturalHeight on HTMLImageElement reflect orientation metadata</title>
+<link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+.ignore-orientation { image-orientation: none; }
+</style>
+<body>
+<script>
+async_test(function(t) {
+  let img = document.createElement("img");
+  img.src = "/images/green-100x50.png";
+  img.onload = t.step_func_done(function() {
+    assert_equals(img.naturalWidth, 100);
+    assert_equals(img.naturalHeight, 50);
+    img.remove();
+  });
+  document.body.append(img);
+}, "naturalWidth and naturalHeight return correct values for an image without orientation metadata");
+
+async_test(function(t) {
+  let img = document.createElement("img");
+  img.src = "/images/arrow-oriented-upright.jpg";
+  img.onload = t.step_func_done(function() {
+    assert_equals(img.naturalWidth, 144);
+    assert_equals(img.naturalHeight, 240);
+    img.remove();
+  });
+  document.body.append(img);
+}, "naturalWidth and naturalHeight return re-oriented values for an image with orientation metadata");
+
+async_test(function(t) {
+  let img = document.createElement("img");
+  img.src = "/images/arrow-oriented-upright.jpg";
+  img.className = "ignore-orientation";
+  img.onload = t.step_func_done(function() {
+    assert_equals(img.naturalWidth, 144);
+    assert_equals(img.naturalHeight, 240);
+    img.remove();
+  });
+  document.body.append(img);
+}, "naturalWidth and naturalHeight return re-oriented values for an image with orientation metadata even with image-orientation:none");
+</script>