How to use this tool
Use a simple, high-contrast image. It is fitted onto a square transparent canvas, then saved as PNG or a single-image PNG-compressed ICO.
A quick example
32 px ICO output contains a 32 × 32 PNG with a valid icon directory.
Supported formats & limitations
ICO uses a standards-based PNG entry supported by modern browsers; legacy bitmap-only readers may not support it. Up to 10 MiB and 24 MP input.
Does this tool upload my input?
No. Tool processing happens in your browser. Your input and result are not automatically saved. The host may still receive ordinary page access logs.Read about privacy.