image/avif
The MIME type for AVIF — next-generation AV1-based images with smaller file sizes than WebP.
Typical extensions
Primary uses
- High-efficiency image delivery on the web
- `<picture>` progressive enhancement
In a browser
Chrome, Edge, Firefox 93+, and Safari 16.4+ support AVIF. Provide JPEG fallbacks for the long tail.
On a server
Negotiate via the `Accept` header — serve AVIF only when `image/avif` is advertised.
In email
Most clients don't render AVIF; stick to JPEG or PNG for email delivery.