Converts icon images to AVIF for the smallest possible files with transparency.
Drag & drop image files here, or browse
Drop your ICO files here
Converts icon images to AVIF for the smallest possible files with transparency.
Drop your ICO image files onto this page, make sure the output format is set to AVIF, and click Convert. Everything runs in your browser and nothing is uploaded.
ICO is the icon format for website favicons and Windows app icons. It supports transparency and is widely recognized by browsers and Windows.
AVIF is based on the AV1 video codec and compresses better than both JPG and WebP. It supports HDR, wide color gamut, and transparency, but not every app and browser can open it yet.
The converter uses the highest resolution stored in the ICO file. Output quality depends on what was saved in the icon originally.
Yes. Your images are processed entirely in your browser using WebAssembly. Nothing gets uploaded to any server. Your files stay on your device the whole time.