How to Extend History States in Photoshop (and Ctrl+Alt+Z Forever)
Photoshop is a fantastically complicated raster image editor, and it’s possible to lose yourself in hours of work when you’re editing photos. But if you do a lot of little tasks and then later realize you’d rather go back, you can only hit Crtl+Alt+Z so many times before you hit the limit in Photoshop’s history panel. Fortunately, it’s really easy to add extra states for history, so you can go back and forth through your artistic progress to your heart’s content.