John Warnock
American computer scientist, inventor and technology businessman
About John Warnock
Lived 1940 – 2023 (aged 82). John Warnock was an American computer scientist, engineer, entrepreneur, businessperson and mathematician, known for Adobe Systems, Portable Document Format and PostScript.
Early life and education Warnock was born on October 6, 1940, and raised in the Salt Lake City, Utah suburb of Holladay. At the University of Utah he was a member of the Gamma Beta chapter of the Beta Theta Pi fraternity. He also received an honorary degree from the American Film Institute. They have three children.
Career Dr. Warnock receives National Medal of Technology and Innovation from President Barack Obama in 2009.
Warnock is known as the creative driving force behind Adobe System's initial software products: PostScript, Adobe Illustrator, and the PDF, and he continued to be involved in new product development throughout his career. "The thing I really enjoy is the invention process. I enjoy figuring out how to do things other people don't know how to do."
Warnock's earliest publication and subject of his master's thesis was his 1964 proof of a theorem solving the Jacobson radical for row-finite matrices, which was originally posed by the American mathematician Nathan Jacobson in 1956.
In his 1969 doctoral thesis, Warnock invented the Warnock algorithm for hidden surface determination in computer graphics. It works by recursive subdivision of a scene until areas are obtained that are trivial to compute. It solves the problem of rendering a complicated image by avoiding the problem. If the scene is simple enough to compute then it is rendered; otherwise it is divided into smaller parts and the process is repeated. Warnock noted that for this work he received "the dubious distinction of having written the shortest doctoral thesis in University of Utah history". The Warnock algorithm solving the hidden surface problem enabled computers to render solid objects at a time when most computer renderings were only line drawings and was featured on the cover of Scientific American in 1970 with accompanying article by Ivan Sutherland.
In 1976, while Warnock worked at Evans & Sutherland, a Salt Lake City–based computer graphics company, the concepts of the PostScript language were seeded. Prior to co-founding Adobe with Geschke, Warnock worked with Geschke at Xerox's Palo Alto Research Center (Xerox PARC), where he had started in 1978. Unable to convince Xerox management of the approach to commercialize the InterPress graphics language for controlling printing on any computer and printer, he and Geschke left Xerox At their new company, they developed from scratch a similar technology, PostScript, and brought it to market for Apple's LaserWriter in 1985. Apple co-founder Steve Jobs said: "When that first page came out of the LaserWriter, I was blown away...No one had seen anything like this before. I held this page up in my hand and said, ‘Who will not want that?’ I knew then, as did John, that this was going to have a profound impact."
In late 1986, Warnock invented Adobe Illustrator, a computer drawing program that used lines and Bézier curves to render infinitely scalable graphics. He initially developed it to automate many of the manual tasks utilized by his wife, Marva, a graphic designer. Illustrator was released in early 1987.
In the spring of 1991, Warnock outlined a system called "Camelot", inventing the Portable Document Format (PDF) file-format.
The new PDF format, though, was slow to gain industry traction and Warnock noted that "the industry 'did not get it.
One of Adobe's popular typefaces, Warnock, is named after him.
Warnock held twenty patents. In addition to Adobe Systems, he was or had been on the board of directors at ebrary, Hiball, Knight-Ridder, Octavo Corporation, Netscape Communications, and Salon Media Group. Warnock was a past chairman of the Tech Museum of Innovation in San Jose.
Warnock's early career and interests are described in the book Programmers at Work, a collection of interviews published by Microsoft Press.
Philanthropy A strong supporter of higher education, Warnock and his wife, Marva, have supported three presidential-endowed chairs in computer science, mathematics, and fine arts at the University of Utah, and also an endowed chair in medical research at Stanford University. In 2003, Warnock and his wife donated 200,000 shares of Adobe Systems, Inc. to the University of Utah as a cornerstone gift enabling completion of a new engineering building, now the John E. and Marva M. Warnock Engineering Building (WEB). The WEB was completed in 2007 and houses the Scientific Computing and Imaging Institute and the Dean of the University of Utah College of Engineering. John and Marva have also personally assisted with cataract surgeries led by Geoffrey Tabin on missions to reverse blindness in least developed countries.
Death Warnock died in Los Altos, California, on August 19, 2023, at the age of 82, from pancreatic cancer. In 1995 Warnock received the University of Utah Distinguished Alumnus Award and in 1999 he was inducted as a fellow of the Association for Computing Machinery. Warnock was awarded the Edwin H. Land Medal from the Optical Society of America in 2000. In 2002, he was made a fellow of the Computer History Museum for "his accomplishments in the commercialization of desktop publishing with Chuck Geschke and for innovations in scalable type, computer graphics and printing." Oxford University's Bodleian Library bestowed the Bodley Medal on Warnock in November 2003. In 2004, Warnock received the Lovelace Medal from the British Computer Society in London. In October 2006, Warnock—along with Adobe co-founder Charles Geschke—received the American Electronics Association's Annual Medal of Achievement Award, being the first software executives to receive this award. In 2008, Warnock and Geschke received the Computer Entrepreneur Award from the IEEE Computer Society "for inventing PostScript and PDF and helping to launch the desktop publishing revolution and change the way people engage with information and entertainment". In September 2009, Warnock and Geschke were chosen to receive the National Medal of Technology and Innovation, one of the nation's highest honors bestowed on scientists, engineers and inventors. In 2010, Warnock and Geschke received the Marconi Prize, an honor specifically for contributions to information science and communications.
Warnock was a member of the National Academy of Engineering, He received honorary degrees from the University of Utah,
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Important facts
People in John Warnock's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped John Warnock's
Frequently asked questions
Who was John Warnock?
American computer scientist, inventor and technology businessman (1940–2023)
When was John Warnock born?
John Warnock was born on 6 October 1940 in Salt Lake City.
When did John Warnock die?
John Warnock died on 19 August 2023 in Los Altos.
What was John Warnock's occupation?
John Warnock was a computer scientist, engineer, entrepreneur, businessperson and mathematician.
What was John Warnock known for?
John Warnock was known for Adobe Systems, Portable Document Format and PostScript.
What nationality was John Warnock?
John Warnock was American.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). John Warnock. https://biography.guide/john-warnock/
MLA: "John Warnock." Biography.guide, https://biography.guide/john-warnock/.
Chicago: "John Warnock." Biography.guide. https://biography.guide/john-warnock/.
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