PNG → ICO Favicon Generator

Create a multi-size .ico from a single PNG. Runs entirely in your browser (no uploads).

Preview

We render the selected sizes using high-quality downscaling and embed each as a PNG inside the ICO.

Best input: a square PNG (e.g. 512×512) with transparent background.
This generator uses the modern ICO flavor: each icon image is stored as PNG.
Some very old Windows versions prefer BMP-compressed icons; if you need that, tell me.