What is ICO?
Icon
A Windows icon container that bundles several sizes of an image in one file, used for app icons and website favicons.
Advantages
- Multiple sizes in one file
- Standard for favicons
Limitations
- Small dimensions only
- Not a general-purpose image format
Best used for
Website favicons and Windows application icons.
- Extensions
- .ico
- MIME type
- image/x-icon
- Compression
- Lossless