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Thomas Knoll 2000 photo

Thomas Knoll is an Adobe Fellow and the software engineer who created Adobe Photoshop.

Thomas originally created Display 0.07 in January 1988 to display grayscale graphics while he was a doctoral candidate at the University of Michigan. He wrote this early build on a Macintosh Plus computer.[1] His brother John Knoll convinced him to to turn Display into a full image editing application that eventually became Adobe Photoshop 1.0.[2] Knoll's source code of version 1.0.1 was released to the Computer History Museum in February 2013.[3][4] Thomas continues to work on Photoshop on a contract basis, mainly on features related to Adobe Camera Raw and the DNG file format standard.[1][5]


  1. 1.0 1.1 Celebrating Photoshop’s 25th anniversary by Martin Evening, Jeff Schewe, Amateur Photographer. 2015-02-17.
  2. Thomas and John Knoll by Jeff Schewe, Photoshop News, originally published in PEI Magazine. 2000-09.
  3. Adobe Photoshop Source Code by Len Shustek, The Computer History Museum. Archived 2013-02-19.
  4. Adobe releases original Photoshop source code for nostalgic developers by Bryan Bishop, The Verge. 2013-02-14. Accessed 2017-05-03.
  5. Thomas Knoll, International Photography Hall of Fame and Museum. 2016-08-19.

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