Photoshop 1.0 source code published

In open access published source code of Photoshop 1.0.1 .

The code is published by the Computer History Museum with the permission of Adobe and is freely available for non-commercial use. The archive contains 179 files, a total of about 128,000 lines of code with almost no comments. About 75% is written in the Pascal programming language, another 15% is in assembly language for Motorola 68000.


Brothers Thomas Noll (left) and John Noll (right)
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When a student of computer vision, Thomas Noll, wrote the Display program for editing digital images on Macintosh in 1987, he could not imagine that it could be sold. Thomas did the program for their own needs. However, in 1988, he and his brother decided to make some money: the program was renamed Photoshop, and 200 copies of the Photoshop version 0.87 were sold with the Barneyscan XP slide scanner.

A promising program was noticed by Adobe employees - and they were able to agree with the brothers about licensing and the right to distribute the version of Photoshop 1.0, which was ready in April 1989 and went on sale in early 1990.



The first version of Thomas Noll wrote alone, then he was given an assistant, Photoshop 2.0 they wrote together with a colleague. Brother John has made many plugins.

User Guide 1990
Tutorial sample 1990
Mirror with source codes on Github