SOURCE-BACKED COMPARISON
WebP vs AVIF: Format Structure Comparison
WebP and AVIF use different container and image-coding families. Choose for a real destination workflow; this comparison does not claim a universal quality, speed or file-size winner.
Reviewed facts
| Property | WEBP | AVIF |
|---|---|---|
| MIME type | image/webp | image/avif |
| Encoding | Not applicable | Not applicable |
| Container | RIFF WebP | HEIF / ISO Base Media File Format |
| Compression / coding | Lossy VP8 or lossless WebP, depending on the image chunk | AV1 image coding |
| Signature | 52 49 46 46 [4-byte size] 57 45 42 50 | Not reviewed |
“Not reviewed” stays visible when the catalog does not yet contain a sourced fact.