ICO Converter

How it works

1. Add files by dropping them above, pasting a URL, or browsing your device.
2. Open Settings to change quality, dimensions or page setup. The defaults suit most cases.
3. Hit Convert. Processing runs on the server, so large files work fine from a phone.
4. Download each result, or take the batch as a ZIP.

Why seven sizes

A .ico is a container holding several images at once, and Windows picks whichever one fits the context — 16 px in a browser tab, 32 px in the taskbar, 256 px in large-icon folder views. Every conversion here writes all seven standard dimensions, so the icon stays sharp everywhere instead of being scaled down from one bitmap.

Sizes 16–128 are stored as 32-bit BMP with a full alpha channel for compatibility back to Windows XP. The 256 px entry is stored as PNG, the only encoding Windows accepts at that size.

Privacy

Files are processed on the server and deleted automatically after 120 minutes. Nothing is read, shared or archived, and no account is required.