AVIF
| AV1 Image File Format (AVIF) | |
|---|---|
 | |
| Filename extension |
.avif |
| Internet media type | image/avif |
| Developed by | Alliance for Open Media |
| Initial release | v1.0.0 19 February 2019 |
| Latest release | v1.2.0 16 October 2025 |
| Type of format | |
| Contained by | HEIF |
| Extended from | HEIF, ISOBMFF, AV1 |
| Open format? | Yes |
| Website | aomediacodec |
AV1 Image File Format (AVIF extension/container) is an open, royalty-free file format specification for storing images or image sequences compressed with AV1.
An AVIF file is designed to be a conformant HEIF file for both image items and image sequences. Specifically, this specification follows the recommendations given in "Annex I: Guidelines On Defining New Image Formats and Brands" of HEIF.
This specification reuses syntax and semantics used in the specification for the AV1 Codec ISO Media File Format Binding.
In tests by Netflix in 2020, AVIF showed better compression efficiency than JPEG, as well as better detail preservation, fewer blocking artifacts and less color bleeding around hard edges in composites of natural images, text, and graphics.
AVIF has been supported by all major web browsers since 2024, with over 93% of users worldwide on compatible browsers.