Convert your AVIF to WebP
Convert your AVIF images to WebP, right in your browser.
Drop your files here
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Convert AVIF to WebP in your browser
AVIF is released in 2019, based on the open AV1 video codec, designed for the modern web, around 50% smaller than JPG at the same perceived quality, often beating WebP too. Google's WebP is the more practical choice when supported by Chrome, Firefox, Edge, Safari 14+ and 95% of modern browsers. Filzy converts AVIF to WebP fully in your browser using libavif compiled to WebAssembly for decoding and libwebp compiled to WebAssembly for encoding. The original file never leaves your device, no upload, no tracking, no daily cap. You can drop a single file or batch dozens at once and download the result as a ZIP.
Files stay on your device
Your AVIF files are decoded inside a Web Worker via WebAssembly. Nothing reaches a server, nothing is logged, no temporary copy is kept anywhere.
Quality preserved by default
Filzy decodes the AVIF pixels, then re-encodes them with libwebp compiled to WebAssembly at high quality. EXIF metadata is preserved when the target format supports it.
Batch entire folders
Drop dozens of AVIF files at once. Filzy converts them in parallel using your CPU cores and packages everything as a single ZIP archive.
How to convert AVIF to WebP with Filzy
- 1
Drop your AVIF files
Drag the files into the area above, or click to pick them. Filzy accepts standard AVIF files of any reasonable size (limited only by your device memory).
- 2
Filzy converts each file locally
libavif compiled to WebAssembly decodes the AVIF, then libwebp compiled to WebAssembly writes the WebP. Each file is processed in parallel, up to your CPU core count.
- 3
Download single files or as ZIP
Pick a WebP file to download directly, or click Download all to grab a ZIP archive. The originals on your device are not modified.