Is the image to ICO converter free to use?

Yes. It’s free and runs in your browser - no signup, no install.

Can I just rename a PNG to .ico?

No. A real .ico file is a multi-resolution container - it stores several sizes of the same icon in one file. Renaming a PNG produces a file that many Windows apps and browsers will not treat as a proper icon.

Which sizes should the ICO include?

For a website favicon, include 16 × 16, 32 × 32, and 48 × 48. For a Windows app or installer icon, also include 64, 128, and 256 so Explorer has a sharp version at every zoom level.

Does the converter keep transparency?

Yes - when the source has an alpha channel (PNG). JPG sources don’t support transparency, so the background is kept as-is.

Can I convert many images to ICO at once?

Yes. Upload multiple images, pick the size bundle once, and download each as its own .ico in a single ZIP.

Does the tool upload my files to a server?

Conversion runs in your browser. Files are processed locally and not stored on our servers.

Image to ICO Converter

Name: Image to ICO Converter
Availability: InStock
Author: Toolspy

Convert images to ICO format with Toolspy's advanced converter. Create ICO files for Windows applications and web.