Is it worth converting WebP to AVIF?
If you already serve WebP, switching to AVIF brings smaller gains than going from JPG, but it is still meaningful: another 10–25% on top of WebP for photographic content. For UI graphics and synthetic content the gap is narrower.
The cost is encode time (AVIF is slower than WebP) and a slightly more restricted browser support window — though over 90% of modern global traffic already handles AVIF natively.
Transparency is preserved
Both WebP and AVIF support an 8-bit alpha channel. If your WebP has transparency — logos, cutouts, UI overlays — it converts cleanly without losing the alpha plane.
How the converter works
- Drop or select one or more WebP files (up to 20 MB each).
- We decode them with libvips and re-encode with libaom (quality 60, encode speed 6).
- Download the AVIF ready to ship to production.
Domande frequenti
Yes — typically the AVIF is 10–25% smaller for photographic content at the same visual quality. For mostly-flat synthetic content the savings are smaller.
Yes, Safari 16.4+ supports AVIF natively. For older versions use a <picture> fallback to the WebP original.
Yes. AVIF supports the same 8-bit alpha channel as WebP, so transparent areas are preserved exactly.
Yes, up to 25 conversions per day without an account. Registered users get higher limits and batches of up to 100 files.