Undoing operations

Most operations can be undone if you make a mistake. Alternatively, you can restore all or part of an image to its last saved version. But available memory may limit your ability to use these options.

For information on how to restore your image to how it looked at any point in the current work session, see Reverting to any state of an image.

To undo the last operation:

Choose Edit > Undo, or click the Step Backward button in the shortcuts bar.

If an operation can't be undone, the command dims and changes to Can't Undo.

To redo the last operation:

Choose Edit > Redo, or click the Step Forward button in the shortcuts bar.

To free memory used by the Undo command, the Undo History palette, or the Clipboard:

Choose Edit > Purge, and choose the item type or buffer you want to clear. If already empty, the item type or buffer is dimmed.

Important: The Purge command permanently clears from memory the operation stored by the command or buffer; it cannot be undone. Use the Purge command when the amount of information held in memory is so large that the performance of Photoshop Elements is noticeably diminished.

To revert to the last saved version:

Choose File > Revert.

Note: Revert is added as a history state in the Undo History palette and can be undone.