Image format
.avif
AV1 Image File Format
AVIF is a next-generation image format based on the AV1 video codec. It offers the best compression ratios available today — significantly better than WebP and JPG — while being royalty-free and open source.
MIME type
image/avif
Developer
Alliance for Open Media
Introduced
2019
Advantages
- Best-in-class compression efficiency
- Royalty-free and open source
- Supports HDR, wide color gamut, and transparency
- Both lossy and lossless modes
Limitations
- Slow encoding speed
- Growing but incomplete browser support
- Limited editing software support
- Relatively new format
When to use AVIF
Cutting-edge web performance optimization
HDR image delivery
Next-gen progressive web apps
Replacing WebP for maximum compression
Technical details
AVIF uses the AV1 intra-frame codec within the HEIF container format. It supports 8, 10, and 12-bit color depths, 4:2:0/4:2:2/4:4:4 chroma subsampling, HDR10, and PQ/HLG transfer functions.
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