Source code
Revision control
Copy as Markdown
Other Tools
<html>
<head>
<body>
<img class="custom">
<img class="big-horizontal" src="large-image.jpg" style="width:500px;">
<canvas class="big-vertical" style="width:500px;"></canvas>
<img class="small" src="small-image.gif">
<img class="data" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABwAAAAcCAYAAAByDd+UAAAAJklEQVRIie3NMREAAAgAoe9fWls4eAzMVM0xoVAoFAqFQqFQ+C9chp4NHvu+4Q4AAAAASUVORK5CYII=">
<script>
"use strict";
window.onload = () => {
const canvas = document.querySelector("canvas"), ctx = canvas.getContext("2d");
canvas.width = 1000;
canvas.height = 2000;
ctx.fillStyle = "red";
ctx.fillRect(0, 0, 1000, 2000);
window.opener.postMessage("ready", "*");
};
</script>
</body>
</html>