Image to AVIF

AVIF (AV1 Image File Format) is based on AV1 video encoding technology, offering the highest compression efficiency currently available. Saves 50%+ space compared to JPEG, and is 20-30% smaller than WebP. This tool uses the browser's experimental API for encoding, please ensure you're using the latest browser version. Supports 10-bit color depth, HDR, wide color gamut, and other professional features.

AVIF encoding support (experimental): • Chrome 92+: Requires enabling experimental features • Firefox 93+: Partial support • Safari: Currently no encoding support Tip: Even if a browser can display AVIF, it may not support encoding. This tool will detect support and notify. Recommend using the latest version of Chrome/Edge.

AVIF encoding characteristics: • Speed: 5-10 times slower than JPEG/WebP • Quality: Smallest file size at equivalent visual quality • CRF value: 0-63, lower means higher quality • Recommendation: CRF 20-35 is suitable for most uses Due to local processing, large images may take longer, please be patient. The browser may display "page not responding", this is normal.

Professional features of AVIF: • 10/12-bit color depth: smoother color transitions • HDR support: preserves high dynamic range information • Wide color gamut: Display P3, Rec.2020 • Color profile: automatically retains original color space Note: These advanced features require the source image to support them; converting from a regular JPEG won't add color information.

Due to the high complexity of AVIF encoding: • Large images (>4000px) may fail • Test with small images on mobile devices • Batch processing may cause out of memory • Some browsers may crash • Test parameters with small images first • Save the original image in case conversion fails These are browser technology limitations, not tool issues.

Q: When to use AVIF instead of WebP? A: When targeting users with new browsers and extreme file size importance. Q: Why is conversion so slow? A: AVIF uses complex video encoding technology, which is computationally intensive. Q: How to speed up conversion? A: Reduce resolution, use higher CRF values, avoid batch processing. Q: Does it support transparency? A: Yes, automatically preserves alpha channel from PNG/WebP. Q: What if it fails? A: Try a smaller image or use another format.