How to Undo in Photoshop (Shortcuts and History Panel)

Photoshop's undo is what makes experimenting safe, and it's also what confuses people most, because there are several different ways to go back and they behave differently. For real damage control you need the History panel as well as the shortcut. Here's what each option does and when to use it.

Undo the last step

The quick shortcut is Ctrl+Z on Windows or Command+Z on a Mac, and it reverses your last action. To redo what you undid, add Shift: Shift+Ctrl+Z or Shift+Command+Z. Photoshop's menus use the same idea, so Edit shows you what the next undo will reverse.

Undo several steps with Step Backward

Adobe's History panel documentation describes Step Backward and Step Forward as the way to move one state at a time. You'll find them in the History panel menu, or under Edit, then Step Backward and Step Forward. If you retrace your edits often, it may be worth checking Photoshop's keyboard shortcut settings to see which keys are assigned to Step Backward on your version.

Jump back with the History panel

1. Choose Window, then History to open the panel.
2. Scroll through the list. Each change you made is recorded as a separate history state.
3. Click the name of the state you want. The image returns to how it looked at that point.
4. Carry on working from there.

Adobe's description is useful: you can revert to any state and continue working from that point. It's the best way to compare an edit before and after: click an earlier state to see the original, then click the latest state to see your changes again.

The catch: new edits erase the future

If you step back and then make a new edit, the states that came after your step back are normally replaced by the new one. That's how history works in most editors. So if you want to try something different without losing the work you've done, use a snapshot or save a new document from a state first. Photoshop lets you create a new document from any image state or snapshot, which is the safest way to preserve a version you might want.

Revert to the last saved version

When an experiment goes badly wrong, File, then Revert takes you back to the last saved version of the file. Adobe notes that Revert is itself added as a history state, which means you can undo it if you change your mind.

Situation	Use
Made one mistake	Ctrl+Z or Command+Z
Made several mistakes	Step Backward, or click an earlier state in History
Want the file as last saved	File, then Revert
Want to keep two versions	Create a new document from a state or snapshot

Delete states or clear the history

• Delete current state removes that change and every change after it. You'll be asked to confirm with Yes.
• Clear History in the History panel menu deletes all states but leaves your image untouched.
• Edit, then Purge, then Histories deletes states across all open documents.
• Alt (Windows) or Option (Mac) with Clear History purges states and frees memory.

Clearing history is useful if Photoshop is running slowly on a big file, but remember it removes your ability to step back, so only do it when you're happy with the work.

If undo doesn't seem to work

• Open the History panel to confirm the state you want is still listed.
• Check whether you've cleared the history or purged states.
• If the file was closed and reopened, the states are gone, so use a saved copy instead.
• Save versions with sensible names as you go, such as poster-v1 and poster-v2.

Prefer to avoid destructive edits altogether? Layers help, and my guide to AI image tools and Generative Fill covers newer ways to add and remove things without cutting into the original.

Make undo work harder with snapshots and versions

The History panel is a safety net with limits. It records recent changes and it disappears when you close the file. If you're about to try something risky, such as a heavy retouch or a layout rebuild, preserve where you are first. Create a new document from the current state, or save the file under a new name. Then you can experiment freely and compare the two. It takes seconds, and it's the habit that saves jobs.

Using layers so you rarely need to undo

The best undo is one you don't need. Put edits on their own layers and you can hide or delete a single layer instead of stepping back through everything. Adobe describes layers as transparent sheets stacked on each other, so you can change one sheet without affecting the rest. That's why professionals work in layers: a mistake affects one layer, not an afternoon of work.

My verdict

Use Ctrl+Z or Command+Z for the last step, the History panel for anything bigger and File then Revert when the experiment has gone too far. Save a version before any major change, because history disappears when you close the file.

Frequently asked questions

How do I undo in Photoshop?

Press Ctrl+Z (Windows) or Command+Z (Mac) to undo the last step, or open Window, History and click an earlier state.

How do I undo multiple steps in Photoshop?

Use Step Backward from the Edit menu or the History panel menu repeatedly, or click an earlier state in the History panel.

How do I go back to the last saved version?

Choose File, then Revert. Revert is added as a history state, so you can undo it.

Can I keep two versions of an edit?

Yes. Create a new document from any image state or snapshot in the History panel.

How do I clear Photoshop's history?

Choose Clear History in the History panel menu, or Edit, Purge, Histories to clear states across all open documents.