Free GIF to ICO Converter
Securely convert GIF to ICO in your browser. No uploads, fast, and free.
Convert GIF to ICO Instantly
The fastest, most secure way to change image formats online.
Looking to convert GIF images to ICO? You've found the right tool. Whether you need to optimize for the web, ensure compatibility, or just change formats, our converter handles it instantly.
Best of all, this tool works entirely offline (after loading) and client-side. This means your personal photos, documents, and designs never leave your computer. It's the privacy-first alternative to cloud-based converters.
GIF vs ICO: Format Comparison
Understand the key differences between these formats.
| Feature | GIF | ICO |
|---|---|---|
| Full Name | GIF (Graphics Interchange Format) | ICO (Icon File Format) |
| Compression | Lossless (LZW) | PNG or BMP compressed |
| Max Colors | 256 (8-bit indexed) | 16.7 million (24-bit) + alpha |
| Transparency | ✅ Yes | ✅ Yes |
| Animation | ✅ Yes | ❌ No |
| Typical Size | 10 KB - 5 MB (animations can be much larger) | 1-100 KB |
| Best For | Simple animations, memes, small icons, simple graphics with few colors | Website favicons, Windows application icons, toolbar icons |
About GIF
GIF is one of the oldest image formats still in widespread use, known primarily for supporting simple animations. It uses lossless compression but is limited to 256 colors, making it unsuitable for photographs.
Advantages
- Supports animation (frame-by-frame)
- Universal browser support
- Simple transparency (1-bit, on/off)
- Small file sizes for simple graphics
Limitations
- Limited to 256 colors
- Poor quality for photographs
- Large file sizes for animations compared to video
- Only 1-bit transparency (no semi-transparency)
About ICO
ICO is a file format specifically designed for icons in Microsoft Windows. It can contain multiple image sizes and color depths within a single file, which allows Windows to display the appropriate icon size in different contexts.
Advantages
- Contains multiple sizes in one file
- Native favicon format for websites
- Supported by all web browsers as favicon
- Can include transparency
Limitations
- Limited to icon-sized images
- Primarily Windows-specific format
- Not suitable for general image use
- Complex multi-resolution structure
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