Undo/Redo
Undo reverses the last action to restore the previous state; Redo re-applies an undone action.
Undo reverses the most recent action to restore the previous state, while Redo re-applies an action that was undone. These are among the most fundamental features in image editing, providing the confidence to experiment without fear of permanent mistakes.
Standard keyboard shortcuts are Ctrl+Z (Cmd+Z on Mac) for Undo and Ctrl+Y or Ctrl+Shift+Z (Cmd+Shift+Z on Mac) for Redo. Most image editors maintain a history of dozens to hundreds of steps, allowing users to revert to much earlier states.
Web-based image tools also commonly implement Undo/Redo. If a mistake is made in the image crop tool or text overlay tool, the undo button provides instant correction. Combined with non-destructive editing (preserving the original while storing edit instructions), layer-based workflows become highly flexible.