Comment by jiggawatts

15 hours ago

Support is not a boolean.

A proper test page should have HDR images, images testing if 10-bit gradients are posterised to 8-bit or displayed smoothly, etc...

iOS for example can show a JPEG XL image, but can't forward it in iMessage to someone else.

2 comments

jiggawatts

HDR support is an anti-feature. Nobody want a part of a website to suddenly be 10x as bright as pure white.

There have been a few other test pages posted in the comments with varying degrees of additional context.