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diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.html
new file mode 100644
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+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.imageData.object.clamp</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+
+<h1>2d.imageData.object.clamp</h1>
+<p class="desc">ImageData.data clamps numbers to [0, 255]</p>
+
+
+<script>
+var t = async_test("ImageData.data clamps numbers to [0, 255]");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  var imgdata = ctx.getImageData(0, 0, 10, 10);
+
+  imgdata.data[0] = 100;
+  imgdata.data[0] = 300;
+  _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
+  imgdata.data[0] = 100;
+  imgdata.data[0] = -100;
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+
+  imgdata.data[0] = 100;
+  imgdata.data[0] = 200+Math.pow(2, 32);
+  _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
+  imgdata.data[0] = 100;
+  imgdata.data[0] = -200-Math.pow(2, 32);
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+
+  imgdata.data[0] = 100;
+  imgdata.data[0] = Math.pow(10, 39);
+  _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
+  imgdata.data[0] = 100;
+  imgdata.data[0] = -Math.pow(10, 39);
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+
+  imgdata.data[0] = 100;
+  imgdata.data[0] = -Infinity;
+  _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+  imgdata.data[0] = 100;
+  imgdata.data[0] = Infinity;
+  _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
+  t.done();
+
+});
+</script>