CONVERSION LOGIC
Create favicon.ico from an image
Scale the uploaded image to fit inside a transparent 256×256 square and wrap the PNG data in an ICO container.
Imagefavicon.icoRuns locally
01Image
02Fit to 256×256 PNG → ICO
03favicon.ico
Non-square images are centered without intentional stretching.
The current ICO contains one 256×256 image entry
It is a compact favicon conversion rather than a multi-resolution ICO package.
Your content stays in the browser
Processing runs locally in the page without requiring the content to be sent to UtilityLake.
02
In short
What exactly does it do?
Scale the uploaded image to fit inside a transparent 256×256 square and wrap the PNG data in an ICO container.
Example?
Non-square images are centered without intentional stretching.