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jprule
(lemmy.blahaj.zone)
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this post was submitted on 22 Sep 2025
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JPEG XL is partially based on FLIF/FUIF, which boasted/claimed the best lossless image compression on the planet.
PNG is superior
PNG only supports 4 colour channels, RGBA. JPEG XL supports up to 4099... In case you ever needed that for depth or thermal data or something.
PNG only supports 8 and 16 bits for each colour channel, JPEG XL supports up to 32 bits for each colour channel. In case you have something physically capable of displaying the difference.
I'd talk about HDR support, but PNG added that recently when it also made animation support official, rather than an extension. Which JPEG XL also supports.
To be fair, I still use PNG out of habit, and because I can't show anybody .jxl files over the internet like I can .png files. Also I mentally associate PNG with quality, while JPEG XL sounds like a big JPEG, which it can also be if you switch it to lossy mode.
png is still better.