What Is AVIF Format? The Next Generation Image Format Explained
AVIF is the most efficient image format available in 2026 — even better than WebP. Here is what it is, how it works, and whether you should use it.
AVIF (AV1 Image File Format) is the newest major image format and delivers the smallest file sizes of any format in widespread use. In 2026, it has strong browser support and is increasingly used by major websites. Here is what you need to know.
What Is AVIF?
AVIF is derived from the AV1 video codec developed by the Alliance for Open Media — a consortium including Google, Apple, Microsoft, Amazon, Netflix, and Intel. AV1 was designed to replace older video codecs for streaming. AVIF applies the same compression technology to still images, achieving around 50% smaller file sizes than JPG at equivalent visual quality.
AVIF vs WebP vs JPG: File Size Comparison
| Format | Relative File Size | Transparency | Animation |
|---|---|---|---|
| JPG | 100% (baseline) | No | No |
| WebP (lossy) | ~70% | Yes | Yes |
| AVIF (lossy) | ~50% | Yes | Yes |
Browser Support for AVIF in 2026
All major browsers support AVIF: Chrome (since 2020), Firefox (since 2021), Safari (since 2022), Edge (since 2021). Estimated global support is ~92% in 2026. Use AVIF with a WebP or JPG fallback for complete coverage.
AVIF Drawbacks
- Encoding speed: AVIF encoding is significantly slower than JPG or WebP
- Tooling: Fewer image editing apps support AVIF
- Compatibility outside browsers: Most desktop software does not open AVIF yet
- Convert AVIF to JPG when you need universal compatibility.
Should You Use AVIF on Your Website?
Yes, with a fallback. Serve AVIF to browsers that support it, WebP to those that do not, and JPG as the final fallback. This approach gives every visitor the best format their browser supports.
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