Compress your existing JPGs and PNGs to 97% quality (you get 30% space savings). If you want to go any lower, not below 93% (about 50% space savings). Anything below this is diminishing returns not worth it. You can use XNViewMP on Linux, Windows and Mac for any and all image manipulation and conversion.
AVIF, JPEG XL and WebP is not worth it now. And WebP is garbage.
Compress your existing JPGs and PNGs to 97% quality (you get 30% space savings). If you want to go any lower, not below 93% (about 50% space savings). Anything below this is diminishing returns not worth it. You can use XNViewMP on Linux, Windows and Mac for any and all image manipulation and conversion.
AVIF, JPEG XL and WebP is not worth it now. And WebP is garbage.