Be careful! image-rs is so slow

[DCjanus]

I've seen this post and found this repo.

I noticed that you are using image-rs in this repo, and I got to say, image-rs is very slow, see this issue and this line.

In my test case, sometimes it's even slower than the Go standard library.(too many memory alloc).

If you want to improve this crate, it might be a good idea to find another image crate.

But I am not concerned about the image processing, so I don't know if there is such a crate in Rust.

[Shnatsel]

image has improved considerably since. The issue you've linked is now fixed, and PNG decoding in particular should now competitive with pure libpng, starting with png crate version 0.16.5. In my tests decoding a PNG and writing it out in uncompressed form via image-rs is 10x faster than imagemagick.

JPEG decoding could still be improved though: image-rs/jpeg-decoder#155

[DCjanus]

Good News!