Topic: Feature request: Lossless JPEG XL Support

Posted under Site Bug Reports & Feature Requests

Can lossless JPEG XL be used instead of PNG's for the source file? The jxl file doesn't have to be displayed on the site, more compatible formats can be used for that, but clicking the "Download" button would give you the jxl file. That way we can get the benefits of jpegxl without the compatibility problems (since stupid google claims there isn't enough interest in the format). Compatibility for devices themselves shouldn't be an issue since all major operating systems support jpegxl (including iphones and androids).

If this is done, please either allow only lossless jpegxl files, or tell us whether a file is lossy or lossless (like with a "meta" tag for example).

whowillevenreadthis said:
Can lossless JPEG XL be used instead of PNG's for the source file? The jxl file doesn't have to be displayed on the site, more compatible formats can be used for that, but clicking the "Download" button would give you the jxl file. That way we can get the benefits of jpegxl without the compatibility problems (since stupid google claims there isn't enough interest in the format). Compatibility for devices themselves shouldn't be an issue since all major operating systems support jpegxl (including iphones and androids).

If this is done, please either allow only lossless jpegxl files, or tell us whether a file is lossy or lossless (like with a "meta" tag for example).

Adding the "lossy" vs "lossless" meta tag would be nice, considering the fact that if you want to search for that, you'll need to use the bad ~ (or). You can only use one in the entire search, which means you can only specify "type:jpg or type:gif or ...", but not "male or maleherm or ..." along with it. Allowing those to be grouped with a single tag would be nice.

But I'm hesitant on switching all Downloads into JPEGXL files. Normally, the Download gives you the original file, which would be JPEG, PNG, etc. If they switch it to entirely JPEGXL, that'd require converting every single image to JPEGXL on upload, convert every single image, animated or not, currently in their database, etc. It's a lot of work, when they can instead just keep the original file as is.

Donovan DMC

Former Staff

The support for jpegxl is extremely limited
https://caniuse.com/?search=jpegxl

Support for the Download file in the browser does matter, some people (including myself) use that button to just open the full image in another tab to see the image in morr detail and don't want to have to fully download the image

Plus, we're an archive site, converting the original is always bad, which is why the download will always be the source file

I would love for JPEG XL to be supported just in general (Google removing support as they introduced the factually inferior WebP format they developed isn't even subtle ), but who knows at this point, wouldn't be the first time a better file format dies off