What's your favorite free image compression tool?

One of the easiest ways to improve website performance is compressing images before uploading them.

I always try to reduce the file size while keeping the quality as close to the original as possible.

What image compression tools do you use?

I've been using this one recently:

https://www.toolsforall.cloud/image-tools/image-compressor

If you've found a better free alternative, I'd love to check it out.