Image guides
How to Convert AVIF to ICO in Your Browser
Converting an AVIF image to ICO produces a real Windows ICO icon — a single size, or the default multi-size package covering 16 through 256 px. This guide covers the steps and what to know about transparency and file size.
Ready to try the tool this guide describes?
Step-by-step conversion
- Open /tools/avif-to-ico.
- Choose an AVIF file — the content is validated before conversion, not just the filename or extension.
- Select Convert & download.
- Save the .ico file from your browser downloads.
Transparency and file size
Each embedded icon size keeps the source’s alpha channel — this is a genuine ICO container (ICONDIR plus one entry per size), with each size embedded as real PNG-compressed image data.
Source-specific behavior
Animated AVIF files convert as a still image — only the first decodable frame is used, and AVIF decoding itself depends on your browser.
Privacy
Conversion runs locally in your browser. The file is not uploaded to Looty Tools servers for this workflow.
Convert AVIF to ICO FAQ
- Why would I need ICO instead of AVIF?
- ICO is the format Windows expects for application icons, desktop shortcuts, and favicons.
- Does every browser support AVIF?
- No. AVIF decoding depends on your browser. Unsupported browsers show a clear decode error instead of a mislabeled download.
- Does ICO output keep transparency?
- Each embedded icon size keeps the source’s alpha channel — this is a genuine ICO container (ICONDIR plus one entry per size), with each size embedded as real PNG-compressed image data.
- Are my files uploaded?
- No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.
- What is validated before conversion?
- The file must actually be an AVIF — the tool checks the ISO-BMFF ftyp brand, not just the filename or extension, before decoding.