<script>
if (window.internals) {
    // Force software rendering mode.
    window.internals.settings.setAcceleratedCompositingEnabled(false);
}
</script>
<style>
img {
    margin: 10px;
}
</style>
<img style="filter: blur(0)" src="resources/reference.png">
<img style="filter: blur(2px)" src="resources/reference.png">
<img style="filter: blur(3px)" src="resources/reference.png">
<img style="filter: blur(10px)" src="resources/reference.png">