WebP to AVIF Converter
without uploading it.
Convert a WebP image to AVIF — smaller files than WebP at the same visual quality.
Drop an image, or click to browse
Drop a WebP image, or click to browse.
Click "Convert to AVIF" — encoding happens on your device.
Click "Download AVIF" to save the converted file.
Why there's no upload step
AVIF encoding correctly in every browser needs a real encoder, not just a quick Canvas call — Chrome supports it natively but Firefox and Safari don't, so this uses a WebAssembly AVIF encoder that runs entirely on your device. Nothing is ever uploaded.
Is my image uploaded anywhere?+
No. Encoding happens entirely in your browser via a local WebAssembly module — nothing is sent to a server.
Why convert WebP to AVIF instead of just keeping WebP?+
AVIF typically compresses slightly smaller than WebP at equivalent visual quality, though the gap is smaller than JPG-to-AVIF.
Will every site or app accept AVIF?+
Support has grown a lot, but some older apps and devices still don't display AVIF — check before relying on it everywhere important.
Can I convert other formats too?+
Yes — see the general JPG to AVIF page, which accepts any common image format.