ICO is a Windows-specific icon container, while AVIF's AV1-based compression produces some of the smallest file sizes available for a given visual quality, making it useful when archiving or publishing a large library of icon and logo designs where storage efficiency matters. Converting ICO to AVIF extracts the icon's largest embedded resolution and re-encodes it with AVIF's modern compression.
AVIF also supports a full alpha channel, so transparency from the original icon carries over, though AVIF encoding takes longer than simpler formats due to its more advanced compression algorithm.
- Install Batchify Image Converter and Resizer Pro on your Windows PC.
- Open the app and select Batch Mode for multiple files, or Individual Mode for a single ICO.
- Drag your ICO file or folder into the app window, enabling recursive folder scanning if needed.
- Set the "From" format to ICO and the "To" format to AVIF.
- Adjust the quality setting to balance file size against visual detail.
- Click Convert. AVIF files are written to your output folder, fully offline.
- 100% offline — your icon and logo files are never uploaded anywhere
- Bulk conversion of entire icon libraries in one pass
- Preserves transparency from the original ICO's alpha channel
- Multi-core processing helps offset AVIF's heavier encoding cost
- Option to delete original ICO files automatically once converted
- No recurring subscription or hidden upload limits
Why archive icon designs as AVIF?
AVIF's efficient compression keeps a documented icon or logo archive smaller, which matters once you're storing many designs from various past projects.
Will my icon's transparency carry over to AVIF?
Yes, AVIF supports a full alpha channel, so transparency from the original ICO file transfers to the converted file.
Can I convert an entire folder of ICO files to AVIF at once?
Yes, Batch Mode handles entire folders, including nested sub-folders, and scales conversion speed across multiple CPU cores.
Ready to convert your images offline, in bulk, with full privacy?