How to Convert ICO to HEIC

ICO's compact Windows-specific structure is already fairly efficient for small icon graphics, but HEIC's HEVC-based compression can shrink even smaller files further, which mainly matters when archiving a large library of icon and logo designs alongside other photo content. Converting ICO to HEIC extracts the icon's largest embedded resolution and re-encodes it into HEIC's modern compression format.

Since most operating systems and design tools expect ICO directly for actual icon use, this conversion works best as an archival step rather than feeding back into active icon design work.

1. Install Turbo Batch Image Converter Pro on your Windows PC.
2. Open the app and select Batch Mode for multiple files, or Individual Mode for a single ICO.
3. Drag your ICO file or folder into the app window, enabling recursive folder scanning if needed.
4. Set the "From" format to ICO and the "To" format to HEIC.
5. Adjust the quality setting to balance file size against visual detail.
6. Click Convert. HEIC files are written to the output folder, fully offline.

• 100% offline — your icon and logo files are never uploaded anywhere
• Bulk conversion of entire icon libraries in one pass
• Significant storage savings for archiving finished icon and logo work
• Multi-core processing for fast handling of large batches
• Option to delete original ICO files automatically once converted
• No recurring subscription or hidden upload limits