ICO Converter
Convert PNG, JPEG, or WebP images to ICO format with multiple size options. Download individual sizes or all.
Drop image or click to upload
PNG, JPEG, or WebP
Upload an image and generate icons
What is an ICO Converter?
The ICO Converter transforms PNG, JPEG, or WebP images into the ICO (Icon) file format used by Windows applications, browsers, and desktop shortcuts. ICO files can contain multiple sizes in a single file, so they adapt to different contexts automatically. All conversion runs in your browser — no server uploads.
Why Use the ICO Format?
Windows Compatibility
ICO is the native icon format for Windows desktop shortcuts, taskbar icons, and executable file icons.
Browser Favicon Support
Supported by all browsers, including legacy ones, making it the safest format for your website root.
Multi-Size Single File
Bundle multiple sizes (16, 32, 48px+) in a single file that the OS selects from automatically.
Private Processing
Conversion is done locally in your browser — your images are never uploaded to any external server.
Available ICO Sizes
| Size | Used For |
|---|---|
| 16 × 16 | Browser tabs, Start menu small icons |
| 32 × 32 | Windows taskbar, dialog boxes |
| 48 × 48 | Windows Explorer large icons view |
| 64 × 64 | Desktop icons (standard) |
| 128 × 128 | macOS icon format compatibility |
| 256 × 256 | High-DPI displays, Windows Vista+ |
Common Use Cases
- Create a
favicon.icofor your website root for maximum browser compatibility - Create Windows application icons for .exe or .dll files
- Generate desktop shortcut icons for Windows
- Create icons for Electron desktop applications
- Convert app logos to ICO format for distribution packages
Frequently Asked Questions
1. What's the difference between ICO and PNG favicons?
ICO is the traditional format supported by all browsers including IE6+. PNG favicons are supported by all modern browsers (Chrome, Firefox, Safari). For maximum compatibility, use favicon.ico at the root of your domain alongside PNG sizes.
2. Should I include multiple sizes in my ICO file?
Yes, including 16x16, 32x32, and 48x48 covers the most common use cases. The OS will select the best-fitting size automatically.
3. Does ICO support transparency?
Yes. ICO files support 32-bit color with an alpha channel (transparency). This tool generates ICO files with full transparency support.