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See also: Viewport


viewport (2) of a window


view +‎ port


  • IPA(key): /ˈvjuːpɔː(ɹ)t/
  • (file)
  • Hyphenation: view‧port


viewport (plural viewports)

  1. A viewing window.
    acrylic plastic viewports in pressure vessels for human occupancy
  2. (computer graphics) A typically rectangular region representing the range or area currently visible (within a window, screen, etc.).
    Dragging the scroll-bar changes which part of the picture is visible within the viewport.



viewport (third-person singular simple present viewports, present participle viewporting, simple past and past participle viewported)

  1. (transitive, computer graphics) To clip (an image or region) so that it fits in a viewport.
    • 1979, Tutorial: Computer Graphics (page 80)
      Some general ideas on clipping, viewporting, and windowing can be found in Rogers and Adams.
    • 1980, MTS, the Michigan Terminal System (volume 17, page 42)
      Viewporting is an operation that takes the portion of the picture that has been mapped into the square region delimited by -1,+1,-1,+1 and further maps it into a rectangular subregion of the screen (a viewport).
    • 2012, Scott Preston, Learn HTML5 and JavaScript for iOS
      The main thing I want you to take away from this chapter is knowing where to start and creating a very simple viewported web site using nothing more than an extra <meta> tag and simple HTML.