WebP vs AVIF: Which Image Format Is Best in 2026?
Published Sep 7, 2026
By The ImageTools Pro team · Last reviewed Sep 7, 2026
WebP and AVIF are the two modern image formats crushing JPEG. Here's an honest comparison of size, quality, and browser support — and when to pick which.
WebP vs AVIF: Which Image Format Is Best in 2026?
Every serious website now serves images in WebP or AVIF. They beat JPEG dramatically on file size, but they're not interchangeable. Here's what you actually need to know.
AVIF: The Compression King
AVIF (based on the AV1 video codec) delivers the smallest files of any web format — often 50% smaller than JPEG at comparable quality. It also supports HDR, transparency, and animations.
Downsides: encoding is slower, and very old browsers won't display it (your browser falls back to a JPEG/WebP if the site is set up correctly).
WebP: The Reliable Default
WebP is 25-35% smaller than JPEG with full support in every browser since ~2020. Encoding is fast, which makes it ideal for real-time conversion tools and CMS-generated thumbnails.
Quick Decision Guide
| Need | Best Format |
|---|---|
| Maximum compression | AVIF |
| Maximum compatibility | WebP |
| Photos in a thumbnail grid | AVIF |
| Logos / UI graphics | WebP or PNG |
| E-commerce product shots | AVIF |
The Pragmatic Answer
Ship WebP as your default and use AVIF where you really care about bytes (large galleries, video thumbnails). Both need a graceful fallback to JPEG for older browsers.
Want to try it? Convert any image in seconds with our Convert Image tool — pick WebP or AVIF, no upload needed.