Format comparison
GIF vs ICO
How do GIF and ICOcompare? Here's everything you need to know to choose the right format — and how to convert between them.
.gif
Full guide →Graphics Interchange Format
GIF is a widely recognized format best known for animated images and short loops. While limited to 256 colors, GIF's animation support and universal compatibility make it a staple of web culture.
.ico
Full guide →Icon File Format
ICO is the icon file format used by Windows for application icons and website favicons. It can contain multiple image sizes and color depths in a single file.
| Specification | GIF | ICO |
|---|---|---|
| Full name | Graphics Interchange Format | Icon File Format |
| Extension | .gif | .ico |
| MIME type | image/gif | image/x-icon |
| Category | Image | Image |
| Developer | CompuServe | Microsoft |
| Year introduced | 1987 | 1985 |
| Compression | Lossy | Lossless |
GIF advantages
- Animation support — multiple frames in one file
- Universal browser and platform support
- Small file sizes for simple graphics
- Supports basic transparency
GIF limitations
- Limited to 256 colors per frame
- Poor quality for photographs
- Large file sizes for animations compared to video
- Binary transparency only (no partial transparency)
ICO advantages
- Multiple sizes in one file
- Standard for Windows icons and favicons
- Widely supported by all browsers
- Small file sizes
ICO limitations
- Limited to small image dimensions
- Primarily Windows-focused format
- Being replaced by PNG favicons in modern web
- Complex internal structure for a simple purpose
Which should you use?
Both GIF and ICO have their strengths. GIF excels at animated images and memes, while ICO is better for website favicons.
Best uses for GIF
Animated images and memes
Simple web animations and UI feedback
Low-color graphics and icons
Short looping clips
Best uses for ICO
Website favicons
Windows application icons
Desktop shortcuts
Taskbar and system tray icons
Convert between GIF and ICO
Need to switch formats? Convert for free with SquishConvert.