Free AVIF (.avif) to WebP (.webp) converter — batch conversion with quality control, entirely in your browser. No upload, no signup.
PNG · JPG · WebP · BMP · GIF · SVG · AVIF
AVIF is the newest generation of web image formats, based on the AV1 video codec. It beats even WebP on compression, but encoder support outside browsers is still patchy — so AVIF files often need converting to PNG or JPG before other software can open them.
WebP is Google’s modern web image format, supported by every current browser. It compresses roughly 25–35% smaller than JPEG at equal visual quality, supports transparency like PNG, and does both lossy and lossless modes — the pragmatic default for images shipped on websites today.
Yes — free, unlimited and without watermarks. Conversion runs on your own machine, so there are no server costs behind it.
No. Your browser decodes the AVIF file and re-encodes it as WebP locally using the Canvas API. Nothing is transmitted anywhere.
The default 90% is visually indistinguishable from the source for almost all images. Around 80% is a good target for photographs on a web page. Below about 70% you start to see artefacts on flat areas and around sharp edges, and each re-encode compounds them.
No. The image is decoded to pixels and re-encoded from a fresh canvas, so EXIF, GPS coordinates and any embedded colour profile are not carried into the WebP file. That is usually what you want before publishing a photo; if you need the camera data, keep the original.
This converter writes lossy WebP using the quality setting you choose. It keeps visible pixels and optional transparency, but it does not copy source metadata or animation.