ICO (file format)
Windows icon file format / From Wikipedia, the free encyclopedia
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The ICO file format is an image file format for computer icons in Microsoft Windows. ICO files contain one or more small images at multiple sizes and color depths, such that they may be scaled appropriately. In Windows, all executables that display an icon to the user, on the desktop, in the Start Menu, or in file Explorer, must carry the icon in ICO format.
| Filename extension |
.ico |
|---|---|
| Internet media type | image/x-icon[1] (but see below) |
| Uniform Type Identifier (UTI) | com.microsoft.ico |
| Developed by | Microsoft |
| Type of format | Graphics file format for computer icons |
| Container for | BMP and PNG |
| Extended to | CUR |
| Filename extension |
.cur |
|---|---|
| Internet media type | image/vnd.microsoft.icon |
| Uniform Type Identifier (UTI) | com.microsoft.cur |
| Developed by | Microsoft |
| Type of format | Graphics file format for mouse cursors |
| Container for | BMP |
| Extended from | ICO |
The CUR file format is an almost identical image file format for non-animated cursors in Microsoft Windows. The only differences between these two file formats are the bytes used to identify them and the addition of a hotspot in the CUR format header; the hotspot is defined as the pixel offset (in x,y coordinates) from the top-left corner of the cursor image where the user is actually pointing the mouse.
The ANI file format is used for animated Windows cursors.