AVIF (AV1 Image File Format) is a next-generation image format based on the AV1 video codec. It delivers superior compression efficiency — typically 50% smaller file sizes than JPEG at equivalent quality. AVIF supports HDR, wide color gamut, transparency (alpha channel), and both lossy and lossless compression, making it one of the most advanced image formats available today.

AVIF generally outperforms both WebP and JPEG in compression efficiency. At the same quality level, AVIF files are typically 20-30% smaller than WebP and 40-60% smaller than JPEG. AVIF also handles fine details and gradients better, reducing banding artifacts. However, WebP has broader browser support and faster encoding/decoding speeds.

Yes, absolutely. All image processing is performed locally in your browser using the browser's built-in AVIF encoder. Your images never leave your device — no uploads, no servers, no tracking. It's completely free with no file size limits (beyond your device's memory).

AVIF is supported in Chrome 85+, Firefox 93+, Safari 16+, and Edge 85+. As of 2025, AVIF enjoys over 93% browser support globally. For older browsers, you can serve fallback formats like WebP or JPEG alongside AVIF using the <picture> element.

Yes. AVIF fully supports alpha channel transparency, just like PNG and WebP. When converting from PNG or WebP images with transparent backgrounds, the resulting AVIF will retain the transparency. This makes AVIF an excellent replacement for transparent PNGs, often reducing file size by 60-80%.

This tool supports JPEG, PNG, WebP, GIF (static), BMP, SVG, and AVIF as input formats. Animated GIFs will be converted to static AVIF (animation support may come in future updates). For best results, use high-quality source images — AVIF compression works best when it has more data to optimize.

Quality 55-75 (Balanced to High) is recommended for most web use — it provides excellent visual quality with significant file size savings. Use Quality 100 (Lossless) when you need pixel-perfect preservation. For social media or thumbnails, Quality 30-40 yields very small files with acceptable quality. You can always experiment with the slider to find the sweet spot for your specific image.

This can happen with already heavily compressed images (like low-quality JPEGs) or very small images where the AVIF container overhead exceeds the savings. It may also occur at very high quality settings. If the converted file is larger, try lowering the quality setting or check if the original is already well-optimized.