Question 1

How do I convert a PNG to an ICO favicon?

Accepted Answer

Drop or upload a square PNG image (512x512 or larger works best), pick the icon sizes you want, then click Convert. The tool generates a single multi-resolution .ico file you can download instantly.

Question 2

What sizes should I include in my ICO file?

Accepted Answer

For website favicons, 16x16 and 32x32 are essential. For Windows desktop icons, include 48x48 and 256x256. The default set (16, 32, 48, 64, 128, 256) covers virtually every use case.

Question 3

Is my PNG uploaded to any server?

Accepted Answer

No. All conversion happens locally in your browser using the Canvas API. Your image is never uploaded anywhere.

Question 4

Does it support transparent backgrounds?

Accepted Answer

Yes. PNG transparency is fully preserved in the resulting ICO file, which embeds the PNG data directly so alpha channels stay intact.