Formats & Optimization

How compression works, WebP and AVIF, PNG to JPEG, and metadata handling.

5 articles

Will optimizing reduce my image quality?Optimized images look the same to the eye. Here is what that means and the one setting that controls it.What's the difference between WebP and AVIF?Both are modern formats much smaller than JPEG and PNG. AVIF is usually smallest; WebP has the widest support. You can use both.How much smaller will my images get?It depends almost entirely on the source image. SlashImage shows the real savings per image and per run.Does SlashImage keep my image metadata (EXIF)?SlashImage strips EXIF and other embedded metadata from every optimized image. Your ICC color profile is always kept so colors render correctly.Why is my WebP or AVIF bigger than the original?SlashImage only keeps a WebP or AVIF version when it's actually smaller. If it wouldn't be, it skips it — that's the plugin working correctly.