Convert JPG to AVIF for the smallest possible web images. AVIF files are 50%+ smaller than JPG at the same quality.
AVIF is the most efficient mainstream image format. For photographic content, AVIF files are typically 50% smaller than JPG at the same visual quality — sometimes more. If you're optimizing for web performance, AVIF is the next step beyond WebP.
Browser support for AVIF is now in Chrome, Firefox, Safari 16+, and Edge — covering most modern web traffic. For sites where you can't support older browsers, AVIF is safe. For broader compatibility, use a <picture> element with both AVIF and WebP fallbacks.
AVIF's compression efficiency is unmatched among widely-supported formats. The trade-off is encoding speed — AVIF takes longer to encode than JPG or WebP. For batch processing in-browser, this means slower conversion, especially for large files. The payoff is dramatically smaller files for the web.
Most online JPG to AVIF converters require uploading your files to their servers. We don't. The conversion happens entirely in your browser using the native Canvas API. Your images never travel over the network.
Open your browser's developer tools, watch the Network tab, and convert a file — you'll see code being downloaded but no images being uploaded. Read our take on why client-side image processing matters.
Yes. Free forever, with no signup, watermarks, or file count limits. Same as all our other tools.
No. The conversion happens entirely in your browser using the Canvas API. Your files never leave your device.
Yes. Drop dozens or hundreds of files and download them all as a ZIP. The only limit is your computer's memory.
Up to 100 MB per file. Since processing is local, the practical limit depends on your device.