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.