Why convert ICO to AVIF?
ICO is the Windows icon container that bundles one or more small images used for favicons and application icons. AVIF is a next-generation format built on the AV1 codec, producing the smallest files of any mainstream format at a given quality.
Both ICO and AVIF support transparency, so transparent regions are carried across cleanly. Moving from ICO to AVIF usually shrinks the file significantly, often by half or more, thanks to AVIF's efficient compression — great for websites, email, and saving storage. AVIF is supported across all modern browsers and is one of the best choices for website performance and Core Web Vitals.
Pixohub converts ICO to AVIF entirely inside your browser using the HTML canvas API, so your images are never uploaded to a server. That makes conversion instant, completely private, and free — turn as many ICO files into AVIF as you like. Reach for AVIF whenever you need cutting-edge web delivery where the very smallest file size wins.
ICO vs AVIF: what to expect
ICO is best for favicons and Windows desktop icons, while AVIF shines for cutting-edge web delivery where the very smallest file size wins. Keep your original ICO if you may later need the source file, and export a AVIF copy for sharing and the web.
Optimizing for the web? After converting, shrink the result further with our image compressor, resize it to exact dimensions with the image resizer, or convert an entire folder in one go using bulk format convert.