Convert WebP images to AVIF for even better compression — typically 30–50% smaller than WebP. Quality slider, browser AVIF support check, and file size comparison. Batch up to 10 files. Requires Chrome 94+, Edge 94+, or Firefox 113+.
The tool checks if your browser supports AVIF encoding. Upload up to 10 WebP files. WebP transparency is preserved in the AVIF output.
Use the quality slider (0–100) to control compression. Quality 70–80 provides excellent visual quality at a fraction of the WebP file size. Quality 100 encodes losslessly.
Each file shows WebP vs AVIF size comparison and percentage savings. Download individually or as ZIP.
AVIF offers significantly better compression than WebP — typically 30–50% smaller at the same visual quality. If you already have WebP assets and want to further reduce file sizes for modern browsers, converting to AVIF is worthwhile. AVIF is now supported by all major browsers (Chrome, Firefox, Safari, Edge) as of 2023.
Yes — converting from WebP to AVIF involves two compression steps. If the WebP was already lossy (most are), the AVIF will apply a second round of lossy compression. For critical images, convert from the original lossless source (PNG or original photo) to AVIF directly rather than converting from an already-compressed WebP.
AVIF can be encoded via the browser Canvas API in: Chrome 94+, Edge 94+, Firefox 113+, Safari 16.4+. Older browsers can display AVIF images but cannot encode them. This tool detects support and warns if encoding is unavailable.
At quality 70, AVIF is typically 30–50% smaller than WebP at visually equivalent quality for photographs. For graphics and images with solid colours, the difference is smaller. For images with very high detail and noise, AVIF may be only 15–20% smaller than WebP.
Use AVIF alongside WebP as a fallback rather than replacing WebP entirely: <picture><source type="image/avif" srcset="image.avif"><source type="image/webp" srcset="image.webp"><img src="image.jpg" alt=""></picture>. This serves AVIF to ~90% of users, WebP to the remainder, and JPG only to very old browsers. Both the AVIF and WebP files are needed on your server.
Yes — AVIF fully supports alpha channel transparency in both lossy and lossless modes. WebP transparent images convert correctly to AVIF with transparency preserved.
