Adobe Photoshop is a graphics editing program developed and published by Adobe Systems Incorporated. It is used mainly for retouching, enhancing and/or authoring digital images for various media productions.
The application uses the Photoshop Document format (.PSD) for its project files, which allows for layer-based editing and other non-destructive operations. Adobe only supports Windows and Macintosh versions of Photoshop, but using Wine, Photoshop CS6 can run well on Linux albeit with some minor issues.
Photoshop and derivatives such as Photoshopped (or just Shopped or Shooped) have become verbs that are sometimes used to refer to images edited by Photoshop, or any image manipulating program.
Use by Untergangers
Many Untergangers also use Photoshop to make their YouTube videos' thumbnails.