CONVERSION LOGIC
Convert PNG to favicon.ico
Fit the PNG into a 256×256 square and wrap the resulting PNG bytes in an ICO container.
PNGfavicon.icoRuns locally
01PNG
02Resize → ICO container
03favicon.ico
Aspect ratio is preserved while fitting inside the square.
ICO is a container format
The current implementation stores PNG image data inside the ICO structure instead of rebuilding pixel data as a legacy bitmap.
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?
Fit the PNG into a 256×256 square and wrap the resulting PNG bytes in an ICO container.
Example?
Aspect ratio is preserved while fitting inside the square.