ICO to AVIF converter
Convert ICO files to AVIF right in your browser. Nothing is uploaded, there is no sign-up, and there is no file limit.
- Runs on your device
- No upload, no queue
- Batch + ZIP download
Drop files here, or click to choose
Supports PNG, JPG, WEBP, AVIF, BMP, GIF, SVG, HEIC, TIFF and ICO — and writes GIF, TIFF and PDF too. Files stay on your device.
How to convert ICO to AVIF
- Drop your ICO file onto the box above, or click it to browse.
- Choose AVIF as the output format.
- Press convert, then download the result.
ICO vs AVIF
ICO works well for favicons and app icons. AVIF works well for modern sites squeezing every kilobyte. The table below compares the two on the things that usually decide the choice.
| ICO | AVIF | |
|---|---|---|
| Compression | Lossless | Lossy |
| Transparency | Yes | Yes |
| Best for | favicons and app icons | modern sites squeezing every kilobyte |