XImage
XImage is a proprietary image file format developed by X Corporation for use with its X Window System. It is designed to store and display graphical images efficiently within the X11 environment. The format supports various color depths and compression methods, allowing for a range of image quality and file size trade-offs. XImage files are typically used for storing icons, cursors, and other graphical elements essential for the X Window System's user interface.
The specification of the XImage format is part of the X Window System protocol. While not as
Historically, XImage played a significant role in the development of early graphical user interfaces on Unix