PNG to ICO Converter
Create .ico favicon files from PNG images for websites and apps. Choose multiple sizes. Free, browser-based, no upload.
What Makes a Good Favicon?
A favicon is the small icon shown in browser tabs, bookmarks, and shortcuts. The ICO format bundles multiple sizes into one file so the OS or browser can pick the sharpest version for the current context. For a website, you typically need at least 16×16 (browser tab), 32×32 (taskbar / address bar), and 256×256 (high-DPI displays and Windows icon views).
Recommended Sizes by Platform
| Size | Used By |
|---|---|
| 16×16 | Browser tab, bookmark bar |
| 32×32 | Windows taskbar, high-DPI tab |
| 48×48 | Windows desktop shortcut icon |
| 64×64 | High-DPI taskbar, Windows 10+ |
| 128×128 | macOS Retina dock icon |
| 256×256 | Windows Vista+ high-res view |
Tips for Best Results
Start with a square PNG image of at least 256×256 pixels with a transparent background for best results. Simple, bold shapes look better at small sizes than detailed illustrations. If your logo has a light background, consider adding padding so it doesn't bleed to the edge of the icon. Check the 16×16 preview carefully — that is the size users see most often.