Charles Geschke

American computer scientist

Also known as: Chuck Geschke

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July 16, 2026

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Charles Geschke was an American computer scientist and co-founder of Adobe Inc.. Geschke, along with John Warnock, developed PostScript, a page-description language that revolutionized the desktop publishing industry. This language describes documents mathematically, allowing precise positioning of text and graphics for display on screens or printing devices. Adobe's innovations, including PostScript and software like Adobe Illustrator, significantly advanced graphic design and publishing capabilities.

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Adobe Illustrator
…American mathematicians John Warnock and Chuck Geschke and burst onto the Silicon Valley scene with PostScript, a vector-based program—using lines defined by mathematical formulas, as opposed to individual bit- or pixel-based descriptions—that vastly improved publishing quality and was instrumental in the so-called desktop publishing revolution. PostScript’s success allowed Adobe to…
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…American mathematicians John Warnock and Chuck Geschke and burst onto the Silicon Valley scene with PostScript, a vector-based program—using lines defined by mathematical formulas, as opposed to individual bit- or pixel-based descriptions—that vastly improved publishing quality and was instrumental in the so-called desktop publishing revolution. PostScript’s success allowed Adobe to…
Read More

Adobe Inc.
Founding of Adobe
…1982 by John Warnock and Charles Geschke. While employed at Xerox Corporation’s Palo Alto (California) Research Center (PARC), the two computer scientists had developed a programming language specially designed to describe the precise position, shape, and size of objects on a computer-generated page. This page description language, later known as…
Read More
…1982 by John Warnock and Charles Geschke. While employed at Xerox Corporation’s Palo Alto (California) Research Center (PARC), the two computer scientists had developed a programming language specially designed to describe the precise position, shape, and size of objects on a computer-generated page. This page description language, later known as…
Read More