File: revoked-blob-print.html

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<!doctype html>
<html class="test-wait">
<title>Printing an image with src="revoked-blob"</title>
<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1665343">
<link rel="match" href="revoked-blob-print-ref.html">
<img width=100 height=50>
<script>
  let canvas = document.createElement("canvas");
  canvas.width = 100;
  canvas.height = 50;
  let ctx = canvas.getContext("2d");
  ctx.fillRect(0, 0, 100, 50);
  canvas.toBlob(function(blob) {
    let img = document.querySelector("img");
    let url = URL.createObjectURL(blob);
    img.onload = function() {
      URL.revokeObjectURL(url);
      document.documentElement.className = "";
    };
    img.src = url;
  });
</script>
</html>