A PhD student started a side project in the 1980s and enlisted his brother to help out. What they came up with changed digital editing forever.

Brothers Thomas and John Knoll aren’t the best-known people in Silicon Valley. But they’re the inventors of software that is used by millions today. They created Photoshop in 1988 and sold the program ...

To millions of people around the world, the name Photoshop inspires images of sharks leaping out at helicopters, phony disaster photos, and retouched celebrity shots. Now, the original computer code ...