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A screenshot of the Wikipedia website, taken on Debian GNU/Linux running the X Window system
Screenshots, screen dumps or screen captures can be used to demonstrate a program, a particular problem a user might be having or generally when computer output needs to be shown to others or archived.
All three terms are often used interchangeably, however some people distinguish between them as follows:
There are numerous ways to take a screenshot on many operating systems, and applications. This article attempts to cover the ones that use standard software on each platform to achieve the task.
In Microsoft WindowsImage use policy. Microsoft Windows is a range of commercial operating environments for personal computers. The range was first introduced by Microsoft in 1985 and eventually has come to dominate the world personal computer market. All recent versions of a screenshot of the entire monitor, complete with taskbar, can be copied to the system clipboardA clipboard is small, thin board that is typically slightly larger than a pad of standard sheets of paper, with a large (typically metal) clip at the top. It is used to rigidly support the pad of paper with one hand, while writing on it with the other. by pressing the Print Screen key. Alternatively, pressing ALTThe Alt key on a IBM PC keyboard is either of two keys located next to Space Bar, used to change the function of a key pressed. The Alt key is a modifier key, it is used in the same fashion as the shift key. For example, simply pressing "A" will type the + Print Screen will copy just the active window to the clipboardA clipboard is small, thin board that is typically slightly larger than a pad of standard sheets of paper, with a large (typically metal) clip at the top. It is used to rigidly support the pad of paper with one hand, while writing on it with the other..
There are many third-party programs available to take screenshots with advanced functionality. Most computer graphics software (e.g., IrfanViewIrfanView is a popular freeware computer program for viewing, editing, and converting image files using dozens of image formats. It does not have extensive image creation and painting capabilities like Adobe Photoshop or GNU's GIMP. Rather, IrfanView is d, GIMPThe GNU Image Manipulation Program or The GIMP is a bitmap graphics editor, a program for creating and processing raster graphics. It also has some support for vector graphics. The project was started in 1995 by Spencer Kimball and Peter Mattis and is now, and Photoshop) can acquire screenshots. Typically, these programs can be configured to include or exclude the mouse pointer, automatically crop out everything but the client area of the active window, take timed shots, and so on.
Screenshots cannot be easily taken when hardware overlay s are involved. Under such a setup, the operating system's video output function is bypassed in favor of more efficient low-level hardware functions that are handled by the graphics card or some other piece of specialized hardware. Hardware overlays are most frequently used for processor-intensive applications such as movies and games.
There are two main ways of getting around hardware overlays:
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