JPEG / PNG to AVIF Converter

Upload JPEG or PNG files, set the AVIF quality, and generate compressed outputs in a batch. The converter will automatically lower quality if needed to ensure each output is smaller than the original. All processing stays in your browser for fast, private conversions.

Compression Notes

For high-quality lossy compression, a quality range of 80–90 often looks visually identical while reducing file size significantly. If a max quality option is available, setting it to 100 can preserve detail while still compressing. For PNG inputs, enable lossless mode to keep original quality; AVIF is typically more efficient than PNG, though exact “same quality” results can still vary depending on the source.

This tool prefers client-side WebCodecs when available, and falls back to a WebAssembly AVIF encoder for consistent compression without sending files to a server.