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  • This WPT test may be referenced by the following Test IDs:
<!doctype html>
<title>Images with an empty alt attribute have an intrinsic size of zero</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
img {
width: 50px;
height: auto;
}
</style>
<img src="broken">
<img src="broken" alt="non-empty">
<img src="broken" alt="">
<script>
const t = async_test("Images with an empty alt attribute have an intrinsic size of zero");
onload = t.step_func_done(function() {
for (const img of document.querySelectorAll("img")) {
const alt = img.getAttribute("alt");
const shouldTakeUpSpace = alt == null || alt.length > 0;
(shouldTakeUpSpace ? assert_not_equals : assert_equals)(img.offsetHeight, 0, img.outerHTML);
}
});
</script>