About this tool
Converts images (PNG, JPEG, WebP, GIF, BMP) to ICO format, with multiple sizes embedded in the same file. Useful for creating site favicons, Windows application icons, personalised shortcuts, and any case where you need an ICO file compatible with systems that expect that specific format.
How to use
- Upload the source image (ideally square with transparent background).
- Select the sizes to include in the ICO (16, 32, 48, 64, 128, 256).
- Click the button to generate and download the .ico file.
Frequently asked questions
- Why do ICOs have multiple sizes in the same file?
- So the system can pick the most suitable size for each context: 16x16 for the browser tab, 32x32 for the desktop, 256x256 for preview views. Instead of having separate files, ICO packs several resolutions, and whoever uses it picks the one needed.
- Which sizes should I include in a favicon?
- For site favicons, 16x16 and 32x32 cover the most common uses (browser tabs, bookmarks). Adding 48x48 and 64x64 improves appearance in Windows environments and large bookmarks. Beyond that is optional, but increases file size.
- Do non-square images work?
- They work, but the result is cropped or stretched to fit square format, which is what ICOs expect. For best results, prepare the original image in square format with the important part centered.