How to Convert PNG to ICO

ICO is the format Windows uses specifically for icons — application icons, file type icons, and website favicons — and a single ICO file can bundle multiple versions of the same image at different sizes (commonly 16×16, 32×32, 48×48, and 256×256 pixels) so the operating system can pick the right resolution depending on context. PNG is actually a strong source format for this conversion, since both formats support a full alpha channel, meaning transparency in your PNG carries over cleanly into the resulting icon.

This makes PNG to ICO one of the most common icon-creation workflows, since most logos and icon designs are already created or exported as PNG to take advantage of its lossless quality and transparency support before being packaged into the Windows-specific ICO container.

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 PNG.
3. Drag your PNG file or folder into the app window, enabling recursive folder scanning if needed.
4. Set the "From" format to PNG and the "To" format to ICO.
5. Click Convert. ICO files are written to the output folder, fully offline.

• 100% offline — your images are never uploaded anywhere
• Bulk conversion of entire folders, including sub-folders, in one click
• Preserves transparency from PNG's alpha channel in the resulting icon
• Produces standard Windows ICO files for icons and favicons
• Multi-core processing for fast handling of large batches
• Option to delete original PNG files automatically after conversion

If you only need straightforward format conversion without RAW or HEIC support, Turbo Batch Image Converter Lite covers this exact PNG-to-ICO conversion in a lighter, more focused app.