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Convert AVIF Images to WebP

Processed entirely in your browser. Never uploaded to a server.

Drop AVIF images here or click to browse

Processed entirely in your browser. Never uploaded to a server.

AVIF usually wins on raw file size, but WebP wins on reach — it's been supported by browsers, image editors, and content platforms for years longer. If something in your pipeline is choking on AVIF, WebP keeps most of the size savings over JPG or PNG while working in far more places.

Decoding happens on your device

The AVIF decoder is a WebAssembly build of libavif, downloaded once on your first conversion and then cached by the browser. It's a couple of megabytes, so the first file takes a moment longer than the rest. Nothing about your image is sent anywhere.

FAQ

Why convert AVIF to WebP instead of keeping AVIF?
Compatibility. WebP has been around longer and is supported by more software — older browsers, more image editors, more CMS platforms, more third-party tools. AVIF support is improving but is still noticeably patchier. Moving to WebP trades a bit of the smallest-possible file size for something more things can actually open.
Does this lose more quality?
A little, in principle. Most AVIF files are already lossy, and re-encoding to WebP runs the decoded pixels through a second lossy compression pass, so it isn't a lossless copy. In practice the difference is rarely visible at normal quality settings, but avoid repeating the round trip more than necessary.
Will the WebP file be bigger than the AVIF?
Usually, yes, at least somewhat — AVIF tends to compress a bit more efficiently than WebP at comparable visual quality, so going from AVIF to WebP typically gives some of that size advantage back. It should still be noticeably smaller than the equivalent JPG or PNG, though.
What happens to transparency?
Nothing bad — both AVIF and WebP support a full alpha channel, and this conversion preserves it. Transparent and partially transparent areas in the source AVIF carry through to the WebP unchanged.

Want to squeeze the file down further instead? Try WebP to AVIF.

Want more control over the output size or dimensions? Try Compress Image or Resize Image.

Curious what makes AVIF different from WebP? Read AVIF explained. Wondering why an AVIF file won't open somewhere? Read where AVIF is and isn't safe to use.