• Max-P@lemmy.max-p.me
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    6 months ago

    There’s not much to improve on PNG. It’s essentially a zipped up BMP with optional filters to rearrange pixels in a way that will hopefully lead to better compression at the zip stage.

    Last time I tested this, if you used xz or zstd to compress a BMP with max settings, it made smaller files than PNG.

    WebP and JXL is where it’s at.

      • Max-P@lemmy.max-p.me
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        6 months ago

        WebP solves use cases for both PNG and JPEG as the same format can be lossless or lossy, while getting the benefits of a much more powerful codec.

        PNG is good for certain types of graphics. Take a full size 48MP picture and encode it in PNG and it’s going to be massive compared to JPEG.

        PNG is a pretty simple and effective format but it’s not especially good nowadays, there’s a reason WebP is popular. Much smaller files for the same quality. Same for JPEG XL.