Convert AVIF to WebP

Converting AVIF to WebP is worth doing when the destination matters more than the source. AVIF is built for the smallest modern web images, at the cost of slower encoding. WebP is built for web images, roughly thirty percent smaller than JPG at similar quality. Which one you want depends entirely on where the image is going next.

A useful middle step. WebP support is considerably broader than AVIF while still being far more efficient than JPG, so this is the right conversion when AVIF is too new for your audience but you do not want to fall all the way back to JPG.

WebP is the practical upgrade from an older lossy format, typically around thirty percent smaller than JPG at matching quality while adding transparency and animation support. Since your source is already compressed, keep quality high so the second pass does not compound the first.

AVIF decoding uses the AV1 image decoder built into the browser, which is why this works without any plugin or install. The image is unpacked to raw pixels and handed to the target encoder in a single pass.

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