AVIF
AVIF is AV1 Image File Format. It is a HEIF-family container with AV1-coded images.
Common uses
- Bandwidth-sensitive websites
- High quality at low bitrates
Strengths
- Excellent compression
- HDR capable in theory
Weaknesses
- Encode can be slow
- Not every browser encodes via canvas
- Some emails and CMS still reject it
Compatibility. Decode is common in current browsers. Encode via canvas is not universal — ConvertPass detects it.
Size and quality. Often smaller than WebP at similar quality. Always measure.
How to open it. A current browser or a supporting editor. If it will not open, the decoder is missing, not necessarily the file.
How to convert it. Image converter, disabled when encode is unavailable.
Security and privacy. Metadata may exist in HEIF boxes. Canvas export will not preserve it.
Related tools
- Image converter
Convert images on-device, with honest limits for animation and AVIF support.
- Image compressor
Reduce image weight in the browser and see the new file size before you download.
Related comparisons
Last reviewed 16 August 2026.