WebP vs AVIF — Modern Image Formats Compared
Quick answer: AVIF compresses 20–30% smaller than WebP at the same quality, but WebP is supported in slightly more environments. Use AVIF if you can serve a fallback; use WebP as a universal modern default.
| Feature | WebP | AVIF |
|---|
| Codec | VP8 (still) | AV1 (still) |
| Typical size vs JPG | ~25–35% smaller | ~50% smaller |
| Transparency | Yes | Yes |
| Animation | Yes | Yes |
| Browser support (2026) | All major | All major except old Safari |
Convert anything to WebP with the free Convert to WebP tool. AVIF support is on the roadmap.