image VS oxipng

It uses https://github.com/1Password/arboard and https://github.com/image-rs/image under the hood. I haven't tested deeply but I assume it should handle many formats out of the box.

You can use the image crate.

As for image processing, I'd start on crates.io and search for "image processing" and skim through to find the most downloaded crates -- image seems to be the most popular, with over 7 million downloads, so I'd check if that has what you want, and if not photon-rs seemed relatively mature with perhaps more features (albeit far less commonly used)

Glad it worked out for you—it seemed like the features are there for basic image conversion, but try to do something a little more sophisticated and you run into some severe design limits. Here is the kind of underlying problem I’m talking about:

https://github.com/image-rs/image/issues/1523

Side note the image-rs crate in the Rust ecosystem has no external dependencies and can encode and decode animated gifs and a variety of other image formats, 100% rust https://github.com/image-rs/image

I believe that photon uses image internally which only provides the ability to overlay another image. The crate imageproc extends image and adds the draw_text method.

And for image resizing I used the "image" crate: https://crates.io/crates/image. Note that while in development mode resizing an image takes a long time (several seconds for me), but in production mode it is lightning fast. I spent some time trying to figure this out :D

Why not just add support for QOI to image?

The image create is actually pretty good. It decodes a lot of stuff natively, and encodes to JPEG and PNG. I actually used it to make something very similar.

the image crate might be just what you're looking for. more specifically, the gif encoder can do exactly what you want.

If you do want the file as a PNG (for transparency and a common format that's well supported), but don't want it so huge, consider something like oxipng. https://github.com/shssoichiro/oxipng

oxipng, pngquant and svgcleaner — optimizing images

I wonder how `pngcrush` compares to `oxipng` (https://github.com/shssoichiro/oxipng).

Personally, I use `oxipng` if I want lossless compression. However, most of the time, I use `pngquant` instead, since it gives significant size reduction even at `99%` (I can't even distinguish between the original and reduced image).

    pngquant --quality=99 --ext=.png --force file.png

Depending on your workflow it might make sense to export PNGs directly from Affinity and then reduce their size with a utility like Oxipng, which uses all your cores to find the best algorithm for each particular image.

Not sure what extensions of images you use, but if they’re PNG you could use oxipng: https://github.com/shssoichiro/oxipng

For PNGs specifically oxipng is awesome. It even has Zopfli compression, which is compatible regular compression, but is ~30% smaller (but requires lots of CPU time to compute).

They do. ripgrep and fd extensively use parallelism, which is specifically enabled by Rust's safety guarantees. oxipng is also in the same boat.

PNG: oxipng SVG: svgcleaner