Frequently Asked Questions
What icon files does a website actually need?
Minimally a favicon.ico (16/32/48) plus a 32×32 PNG for modern browsers. For a polished result also add apple-touch-icon.png (180×180) for iOS home screens and 192/512 PWA icons for installable apps — this tool generates all of them from one image.
Does favicon.ico support transparency?
Yes. The generated ICO embeds PNG images (Vista+ format) which keep full alpha transparency, so a transparent PNG source stays transparent in the icon.
Why does my 16×16 icon look blurry?
Small icons are resized from a 512×512 intermediate canvas with high-quality filtering. If it still looks soft, prefer bold, high-contrast shapes and avoid fine text at 16px. Try the “Center crop” fit mode for square designs.
Are my images uploaded to a server?
No. Every icon is rendered locally in your browser with Canvas — your image never leaves your device.