ICO is an image format used for Windows icons and website favicons. It supports multiple icon sizes in a single file (16x16, 32x32, 48x48, etc.), allowing browsers and operating systems to automatically select the appropriate size.

What input formats does Image to ICO support?

The tool supports common image formats including PNG, JPG/JPEG, GIF, WebP, and BMP. PNG format is recommended for best transparency support. Note that ICO does not support gradients and complex transparency effects.

What sizes are included in the generated ICO?

The generated ICO file includes multiple sizes: 16x16 (browser tab), 32x32 (desktop shortcut), and 48x48 (folder display). You can also optionally include 128x128 and 256x256 sizes for high-resolution displays.

Does Image to ICO upload my image to a server?

No. This tool runs entirely in your browser. All image processing is done locally on your device and your images are never uploaded to any server. Your privacy is fully protected.

How do I use the ICO file as a website favicon?

Upload the generated ICO file to your website's root directory, then add this line to your HTML head section: . Browsers will automatically load and display the icon.

Why does the downloaded file show as PNG?

The downloaded file is in correct ICO format. Some browsers may display a PNG extension. You can simply rename the file to .ico extension and it will work properly as a favicon.

Image to ICO - Free Online Favicon Converter Tool

How to Use

Convert regular images to ICO format for website favicons, perfect for browser tabs, bookmarks, and shortcuts.

Key Features:

🖼️ Supports PNG, JPG, WebP, GIF, BMP input
📏 Outputs multi-size ICO files (16×16 to 256×256)
👁️ Live preview of each icon size
✨ Preserves transparency
💾 One-click ICO download
🔒 100% client-side, no image upload

🖼️ Image to ICO

How to Use