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What is an ICO file?
The icon format used for website favicons and Windows application icons.
Pros
- Holds several icon sizes in one file
- Universal favicon support
Cons
- Only for small icons
How to open ICO files
Every modern browser and operating system can display it.
Is ICO lossy or lossless?
ICO is lossless, so it is ideal for graphics, text and anything you will edit again.
When should you convert ICO?
The icon format used for website favicons and Windows application icons. If the app or device you need doesn't accept ICO, convert it to JPG or PNG — the most widely supported alternatives.
Convert to ICO from…
ICO at a glance
- Full name
- Windows Icon
- Developed by
- Microsoft
- Introduced
- 1985
- Contains
- multi-resolution icon container (PNG/BMP)
- MIME type
- image/x-icon
- Best for
- website favicons, Windows icons