File Converter

AVIF to ICO converter Free, private, no upload.

Convert AVIF files to ICO right in your browser. ICO is what Windows shortcuts and website favicons (favicon.ico) expect. Your files are never uploaded.

or drop files anywhere · paste with Ctrl/⌘ + V

How to convert AVIF to ICO

  1. 1 Drop your AVIF files onto the page, or click “Choose files”. You can add many at once, or a whole folder.
  2. 2 ICO is already selected as the output. Optionally open Options to adjust max width, max height, rotate.
  3. 3 Click Convert, then Save. Converting several files? Save them all as one ZIP.

About the formats

AVIF · AV1 Image File Format

AVIF is a next-generation image format based on the AV1 video codec. It often produces files half the size of JPG with better detail, and supports HDR and transparency.

ICO · Windows icon

ICO is the icon format used by Windows and for website favicons.

The conversion runs on your device using jSquash (MozJPEG, OxiPNG, libwebp, libavif and libjxl) compiled to WebAssembly. You can adjust: max width, max height, rotate, flip, icon sizes.

Frequently asked questions

How do I convert AVIF to ICO?

Drop your AVIF files onto the page, or click “Choose files”. You can add many at once, or a whole folder. ICO is already selected as the output. Optionally open Options to adjust max width, max height, rotate. Click Convert, then Save. Converting several files? Save them all as one ZIP.

Are my files uploaded to a server?

No. The conversion runs entirely in your browser using WebAssembly. Your files never leave your device, so it is safe for private photos, contracts and business data. Once the page has loaded it even works offline.

Will converting AVIF to ICO reduce quality?

No further quality is lost: ICO stores the result losslessly. It cannot restore detail that was already discarded when the AVIF file was created.

Can I convert multiple AVIF files to ICO at once?

Yes. Add as many AVIF files as you like; they are converted in parallel on your device and you can download them all as a single ZIP.

Is it free? Are there limits?

It is free, with no sign-up, no watermark and no daily limits. Because nothing is uploaded there is no upload size limit either; the only limit is your device’s memory, which matters mostly for very large videos.

See everything the AVIF converter and the ICO converter can do.