ToAVIF

High-performance - image compression

Quality 60 0 = tiny file,
100 = lossless

Effort 4 higher effort = smaller file
results in longer encoding time

Colour-Subsampling

4:2:0 for images,
4:4:4 for text or hard edges

Resizing Reduces pixel count

Drop images here or click to select

Loading Encoder…

Your data is safe (here)!

Images are never uploaded to the server, it's 100% client-side and nobody can see what you're doing.
The site is heavily inspired by towebp.app
Java script uses the same AVIF encoder (libavif compiled to WebAssembly), a open source alternative with the same codeds as squoosh.app.

Complete local transcoding with Drag and drop PNG, JPEG, WebP, GIF or BMP files.
Compare your results, rerun encoding with new settings and download images individually or as a ZIP archive.