Comment by dmd
3 days ago
To forestall confusion: If the smiley face on the right is not much much brighter than the page background (which is #ffffff), then your hardware does not support this and you are not seeing what others are seeing.
3 days ago
To forestall confusion: If the smiley face on the right is not much much brighter than the page background (which is #ffffff), then your hardware does not support this and you are not seeing what others are seeing.
To forestall more confusion: If your system is set to dark mode, the page background is not #fff, and is instead #1d1e20.
There's a dark/light mode switcher at top of the page, but the page background still looks grey, even when going to another page on the blog that doesn't have the HDR images.
> If the smiley face on the right is not much much brighter than the page background [...] then your hardware does not support this
Or you're using Safari because my hardware absolutely does support this (tested in Chrome and I am thankful that Safari does not support it because good grief.)
A funny thing I've noticed in Safari is that the play buttons on video elements are HDR white, and so the screen will adapt (turn grey) when you scroll past one.
> and I am thankful that Safari does not support it because good grief
Safari absolutely will support HDR images if it doesn't already. It might not support this PNG hack, but it's inevitable that it'll support HDR HEVC or JPEG images since those are what's produced by iOS and Android cameras respectively, and they obviously aren't going to just ignore them.
iPhones have supported HDR photos for over a decade, since at least the iPhone 5S; for whatever reason, they've ignored them for at least that long.
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Works in mobile Chrome, not in mobile Firefox; increases the overall screen brightness a bit to add the dynamic range. Shines!