Convert PNG images to ICO files with multiple icon sizes. Perfect for favicons and Windows icons.
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PNG, JPG, or other image formats
Place the favicon.ico file in your website's root directory. Most browsers will automatically find it.
<link rel="icon" href="/favicon.ico">ICO files can be used for Windows shortcuts, application icons, and folder icons. Right-click any shortcut → Properties → Change Icon.
Check out our Favicon Generator for a complete set of icons including Apple Touch Icons, Android Chrome icons, and web manifest files.
Try Favicon GeneratorAn ICO file is a Windows icon format that can contain multiple image sizes in one file. It's commonly used for favicons (browser tab icons) and Windows application icons. A single ICO can include 16x16, 32x32, 48x48, and larger sizes so the system can choose the best one.
For favicon use, include at least 16x16 and 32x32. For complete compatibility, add 48x48 and 256x256. The 16x16 and 32x32 sizes are used in browser tabs, 48x48 for Windows shortcuts, and 256x256 for high-resolution displays.
Yes, any PNG image can be converted to ICO. For best results, use a square PNG image with transparent background. Non-square images will be centered with transparent padding. The tool preserves transparency in the output ICO file.
Yes, completely free with no signup required. All processing happens in your browser — your images are never uploaded to any server, ensuring complete privacy.
ICO files can contain multiple sizes in one file, allowing browsers and operating systems to automatically choose the best size. While modern browsers support PNG favicons, ICO provides better compatibility with older browsers and Windows applications.