Convert AVIF files directly into ICO in your browser. 100% private WebAssembly processing, no uploads required.
Output format
AVIF files are converted to ICO entirely on your device. Your images are never uploaded to a server.
Add many AVIF files at once and convert them all in a single click. Each file has its own progress indicator and status, and you can download everything as a ZIP at the end.
No estimated savings — the actual output bytes are shown, so the percentage saved you see is what you actually get.
For lossy ICO output a 1–100 quality slider trades size against visual quality. The tradeoff is explained inline.
ICO (Windows Icon / Favicon) is an image format container designed for website favicons and application icons.
ICO is required by web browsers for website favicons and Windows application icons.
ICO supports alpha transparency, so transparent regions in your source image are preserved in the converted file.
It depends on the source image and the quality settings you choose. The tool always shows the actual output size and the exact percentage saved.
No. Files processing is secure and safe — your images are processed locally in your browser and never uploaded.
Yes. Drag in as many files as you want, click Convert All, and download the results individually or as a ZIP.
Yes. The interface is responsive and touch-friendly, and conversion runs on modern mobile browsers.