<!DOCTYPE HTML>
<html>
<head>
<title>Pixel rounding testcase</title>
<style type="text/css">

html, body { margin: 0; border: none; padding: 0; }
img { margin: 10px; display: block; }

</style>
</head>
<body>
<img src="blue-1x1.png">
<img src="blue-3x3.png">
<img src="blue-5x5.png">
<img src="blue-25x25.png">
</body>
</html>