ICO Format
Windows Icon Format
ICO is the standard format for Windows application icons and browser favicons, supporting multiple resolutions in a single file.
What Is ICO Used For?
ICO files are commonly used for application icons, favicons, windows desktop icons. This format uses lossless compression, so it is better when preserving exact visual or textual fidelity matters. It is broadly compatible across modern browsers and devices.
- •ICO is best when you need application icons, favicons, windows desktop icons.
- •If your goal is better compatibility, smaller files, or easier sharing, converting ICO to another format can help.
- •Before converting, check whether you need transparency, animation, editable structure, or maximum fidelity so you choose the right output format.
| Property | Value |
|---|---|
| File Extension | .ico |
| MIME Type | image/x-icon |
| Category | image |
| Transparency | Supported |
| Animation | Not supported |
| Lossy Compression | No |
| Lossless Compression | Yes |
| Vector-based | No |
| Browser Support | All major browsers (for favicons) |
| Best For | Application icons, favicons, Windows desktop icons |
When ICO Makes Sense
Choose ICO when your priority is application icons, favicons, windows desktop icons. It is especially useful if you need transparency, preserved quality,depending on your workflow.
Why Convert ICO Files
People usually convert ICO when they need better compatibility, easier sharing, a smaller download, or a format that works better in a browser, editor, office suite, or publishing workflow.
Convert ICO to Other Formats
These are the most relevant conversions if you already have a ICO file and need a more compatible, editable, or optimized output.
Convert Other Formats to ICO
Use these conversion paths when ICO is the better target format for quality, compatibility, sharing, or web delivery.
Convert ICO Online Without Uploading
If you need to convert ICO files, ConvertTheFile processes them locally in your browser. That means your files stay on your device while you switch to the format that best matches your use case.