AVIF Converter

What is AVIF?

AVIF (AV1 Image File Format) is a modern image format derived from the AV1 video codec. At the same visual quality, AVIF files are typically 50% smaller than JPEG and 20% smaller than WebP. Chrome 85+, Firefox 93+, Safari 16+, and Edge 121+ all support AVIF natively. As of 2024, over 95% of global browser traffic comes from AVIF-compatible browsers.

AVIF vs WebP vs JPEG

At equivalent perceived quality, AVIF saves roughly 50% over JPEG and 20% over WebP. The trade-off is encoding time: AVIF is CPU-intensive to encode (this tool handles that in your browser using WebAssembly), while decoding is fast in modern browsers. For most web images, switching from JPEG to AVIF at quality 60 produces files under 100KB that look indistinguishable from 300KB JPEGs at full screen.

When to convert from AVIF

Some tools and platforms don't accept AVIF yet. WhatsApp supports AVIF on Android but not iOS as of early 2026. Windows 10 requires a codec extension to open AVIF files in Photos. If you downloaded an AVIF from a website and need a JPEG for an older app, convert it here in seconds.

How this tool works

This tool uses @jsquash/avif, a WebAssembly port of the libaom AV1 encoder and decoder. For encoding (to AVIF), the source image is decoded into raw pixel data via the browser's Canvas API, then the WASM module compresses it to AVIF at your chosen quality. For decoding (from AVIF), the WASM module reads the AVIF and produces raw pixels, which the Canvas API re-encodes to your chosen output format.

Privacy

No image data is ever sent to a server. The WebAssembly module downloads once, then runs entirely in your browser tab. Closing the tab discards all image data.