Turn WebP images into AVIF files that are usually another 20-30% smaller, with transparency kept - going the other way? Use AVIF to WebP.
Moving a whole animated WebP? Make it an animated GIF first with WebP to GIF, then use GIF to Animated AVIF.
AVIF is the next step after WebP.
At the same look it is usually 20-30% smaller, and it adds HDR and wide colour.
For image-heavy sites that is a real saving in bandwidth and load time.
| WebP | AVIF | |
|---|---|---|
| Compression | Very good | Best - 20-30% smaller |
| Transparency | Yes | Yes |
| Animation | Yes | Yes |
| HDR / 10-bit | No | Yes |
| Encoding speed | Fast | Slower |
Test files are in the WebP sample files.
Drop your WebP files into the box, keep quality 65 or pick a preset, and press Convert to AVIF. More than two files come as a ZIP.
Usually yes - about 20-30% at the same visual quality. Very small or flat images may save less.
Yes. Transparent areas stay transparent. Pick Fill background for a solid colour.
Most browsers cannot write AVIF yet, so your browser sends one PNG copy over HTTPS to our server, which encodes it and deletes it the moment you download.
Each frame you tick under the preview becomes a still AVIF. For a moving result use WebP to GIF and then GIF to Animated AVIF.
Serve AVIF first and keep WebP as the fallback - browsers pick the best format they support.
Up to 50 WebP files per batch. Recent conversions stay in this browser for later download.