Why does #Mastodon use #PNG format to share #embeddedImages in #toots, and not #JPG #JPEG ?
The aim of embedding images in a toot is in general not so share images with a print quality, and there are other means of sharing if that's the aim -- so why not gain a factor 2 or 3 on file size both for #environmental #footprint reduction and to reduce the burden on #instance #servers ?
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@cyclotopie So, you're asking if Mastodon doesn't use WebP, JPEG-XL, AVIF, or other formats?
It's because PNG is reliable, and supported across all browsers. WebP is now supported across most, AVIF still has work to do, and JPEG-XL is unsupported across the board, unless patches (on Chrome) and flags (on Firefox) are added or enabled.
See: https://github.com/mastodon/mastodon/issues/20896
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