Convert WebP to AVIF online free. Upgrade your web images to the next-generation format. 20–30% smaller than WebP at the same quality. No upload.
WebP was Google's answer to JPEG inefficiency — and it delivered a 25–35% improvement. AVIF goes further: it is typically 20–30% smaller than WebP at the same visual quality. If you are already using WebP, converting to AVIF is the logical next step for maximum performance.
The key difference is the codec: WebP uses VP8/VP8L, while AVIF uses AV1 — a more advanced video codec adapted for still images. The algorithmic improvements in AV1 mean better detail preservation at lower bitrates, especially for natural photographs.
Consider converting WebP to AVIF if you are building a modern web app targeting Chrome and Safari users and want to squeeze out maximum performance. Always keep your WebP files as a fallback for Firefox users who may not yet have full AVIF support.
Drag your WebP file into ImgSwift or click to select.
Choose AVIF. Quality settings of 75–85 are a good starting point for AVIF.
Save the AVIF file and deploy alongside WebP as a fallback.
Generally yes — AVIF achieves 20–30% better compression than WebP at the same quality. However, AVIF encoding is slower, and browser support is slightly lower than WebP.
Use both. Serve AVIF to browsers that support it and WebP as a fallback using the
Any transcoding between lossy formats introduces some generation loss. For best results, convert from the original lossless source (raw, PNG, or TIFF) to AVIF rather than re-compressing an already-compressed WebP.
AVIF encoding is more CPU-intensive than WebP. ImgSwift runs everything in your browser and uses Web Workers to keep the UI responsive, but large images may take a few seconds to encode.