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this post was submitted on 29 Mar 2025
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JPEG does not support lossless compression. There was an extension to the standard in 1993 but most de/encoders don't implement that and it never took off. With JPEG XL you get more bang for your buck and the same visual quality will get you a smaller file. There would be no more need for thumbnails because of improved progressive decoding.
https://youtu.be/UphN1_7nP8U
Then same can be said about JPEG LS and JPEG XL. Most browsers don't implement that.