Windows Imaging Format
| Filename extension | 
.wim, .swm, .esd | 
|---|---|
| Internet media type | 
application/x-ms-wim | 
| Magic number | MSWIM\0\0\0 / WLPWM\0\0\0 for wimlib pipable variant | 
| Developed by | Microsoft | 
| Type of format | Disk image | 
The Windows Imaging Format (WIM) is a file-based disk image format. It was developed by Microsoft to help deploy Windows Vista and subsequent versions of the Windows operating system family.