What Does Ctrl+Y Do? (Redo Shortcut Key Explained)

Ctrl+Y is the keyboard shortcut for Redo. It reapplies the last action you reversed with Ctrl+Z (Undo). For example, if you delete a paragraph in Word, press Ctrl+Z to bring it back, then press Ctrl+Y to delete it again. On Mac, the equivalent is Cmd+Y (or Cmd+Shift+Z in many apps). In a few programs Ctrl+Y behaves differently it opens browser history, toggles CMYK preview in Photoshop, or goes to a folder in Outlook.

What Does Ctrl+Y Do in Each App?

Ctrl + Y in Microsoft Office

Microsoft Word

In Microsoft Word, Ctrl+Y redoes the last action you undid with Ctrl+Z. If you delete a sentence, press Ctrl+Z to restore it, then change your mind, Ctrl+Y deletes it again. Word also lets Ctrl+Y repeat your last command for example, after applying a heading style, pressing Ctrl+Y on another line applies the same style.

Microsoft Excel

Excel gives Ctrl+Y two related jobs. It redoes an undone action, and it repeats your last action even when nothing was undone. Apply bold to one cell, select another, press Ctrl+Y, and the bold formatting repeats instantly a real time-saver on repetitive edits.

PowerPoint

In PowerPoint, Ctrl+Y performs a straightforward redo, reversing your last Ctrl+Z. It works across text edits, object moves, and formatting changes on slides.

Outlook

Outlook is the exception that surprises people. Here Ctrl+Y does not redo it opens the “Go to Folder” dialog, letting you jump to any mail folder quickly. If you’re expecting redo in Outlook, this catches you off guard.

Google Docs

In Google Docs, Ctrl+Y redoes the last undone action, exactly like Ctrl+Shift+Z. Both shortcuts work, so you can use whichever you find more comfortable.

Ctrl + Y in Web Browsers

Web Browsers (Chrome, Firefox, Edge)

In most web browsers, Ctrl+Y has nothing to do with redo it opens your browsing history in a new tab or window. This is one of the most common sources of confusion, since users expect the redo behavior they’re used to in document editors.

Ctrl + Y in Adobe

Photoshop

In Adobe Photoshop, Ctrl+Y toggles CMYK preview mode, letting designers see how artwork will look when printed in CMYK color. Redo in Photoshop is Ctrl+Shift+Z, not Ctrl+Y.

Illustrator

In Illustrator, Ctrl+Y switches to Outline view, showing the paths and outlines of your artwork without any fills or styling useful for selecting and editing precise paths.

Ctrl + Y in Other software

DaVinci Resolve, AutoCAD & Tally

In DaVinci Resolve, Ctrl+Y performs a standard redo of your last edit. In AutoCAD, Ctrl+Y mirrors the Redo button, reversing your last undo. In Tally (TallyPrime and ERP 9), Ctrl+Y repeats the last action, though behavior depends on the screen you’re in. Because Ctrl+Y is reassigned so often, it’s always worth checking an application’s keyboard-shortcut settings to confirm what it does.

Ctrl+Y on Mac (Cmd+Y and Cmd+Shift+Z)

On Apple computers, the Ctrl key (labeled “control”) does not perform redo. The Mac equivalent of Ctrl+Y is Cmd+Y in some apps and Cmd+Shift+Z in many others, including most Adobe and creative software. macOS never fully standardized on a single redo shortcut, so the exact key depends on the program. If Cmd+Y doesn’t redo, try Cmd+Shift+Z between the two, you’ll cover almost every Mac application.

What If Ctrl+Y Doesn’t Work?

If Ctrl+Y isn’t redoing anything, there are a few common reasons:

• Nothing has been undone. Ctrl+Y only works if you’ve previously pressed Ctrl+Z. With no undone action, there’s nothing to redo.
• The app reassigns Ctrl+Y. In Photoshop, Illustrator, Outlook, and web browsers, Ctrl+Y does something other than redo (see the table above).
• You’re on a Mac. Use Cmd+Y or Cmd+Shift+Z instead.
• The app uses Ctrl+Shift+Z for redo. Many editors, including Google Docs and Adobe apps, prefer this combination.

When in doubt, open the program’s Edit menu the redo command and its assigned shortcut are almost always listed there.

Ctrl+Y vs Ctrl+Shift+Z

Ctrl+Y and Ctrl+Shift+Z often do the same thing redo an undone action but they come from different traditions. Ctrl+Y is the classic Windows redo shortcut, used across Microsoft Office and most Windows software. Ctrl+Shift+Z became the redo standard in Adobe Creative Cloud, Google Docs, and macOS. Many modern programs accept both, so you rarely need to memorize which is which but if one doesn’t work, the other usually will.

The History Behind Ctrl+Y

Ctrl+Y hasn’t always meant redo. In the WordStar word processor for CP/M and MS-DOS, Ctrl+Y deleted the entire current line a convention that many 1980s text editors copied, including Borland’s IDEs. In emacs, Ctrl+Y performs a paste (called “yank”). The OpenVMS operating system used Ctrl+Y as a powerful “abort” command. The pairing of Ctrl+Z for undo and Ctrl+Y for redo became conventional partly because the keys sit close together on a QWERTY keyboard, easy to reach with the left hand while the right stays on the mouse. This history explains why Ctrl+Y still behaves so differently across older and specialized software.

Key Takeaways

• Ctrl+Y is the Redo shortcut in most Windows applications.
• It reverses your last Ctrl+Z (Undo) the two are exact opposites.
• On Mac, use Cmd+Y or Cmd+Shift+Z.
• Ctrl+Y means something different in Photoshop (CMYK preview), Illustrator (Outline view), Outlook (Go to Folder), and browsers (history).
• In Excel, Ctrl+Y can also repeat your last action.
• If Ctrl+Y doesn’t work, you likely haven’t undone anything yet or the app reassigns the key.

Frequently Asked Questions

Is Ctrl+Y redo or undo?

Ctrl+Y is redo. It reapplies the last action you reversed with Ctrl+Z (undo). The two are exact opposites: Ctrl+Z goes back, Ctrl+Y goes forward.

What is the opposite of Ctrl+Z?

Ctrl+Y is the opposite of Ctrl+Z. Ctrl+Z undoes your last action; Ctrl+Y redoes it.

What is the redo shortcut key?

The redo shortcut key is Ctrl+Y on Windows. Some apps also use Ctrl+Shift+Z. On Mac, it’s Cmd+Y or Cmd+Shift+Z.

Does Ctrl+Y work on Mac?

On Mac, the redo shortcut is usually Cmd+Y or Cmd+Shift+Z, depending on the app. The Ctrl key on Mac (labeled “control”) does not perform redo.

Why doesn’t Ctrl+Y work?

Ctrl+Y only redoes an action if you’ve already undone something with Ctrl+Z. If nothing has been undone, there’s nothing to redo. Some apps (like Photoshop and Outlook) also assign Ctrl+Y to a different function entirely.

What does Ctrl+Y mean?

Ctrl+Y means “redo the last undone action” in most software. It’s written as Control+Y, C-y, or ^y.

What is the difference between Ctrl+Y and Ctrl+Shift+Z?

Both can redo an undone action. Ctrl+Y is the traditional Windows redo shortcut; Ctrl+Shift+Z is common in Adobe apps, Google Docs, and on Mac. Many programs accept both.

What does Ctrl+Y do in Excel?

In Excel, Ctrl+Y redoes the last undone action and it can also repeat your last action (like applying formatting) even when nothing was undone.

Conclusion

Ctrl+Y is one of the most useful shortcuts you can learn, and now you know exactly what it does. In most Windows applications Word, Excel, PowerPoint, Google Docs, and beyond it redoes the last action you undid with Ctrl+Z. The two work as a pair: Ctrl+Z steps back, Ctrl+Y steps forward.

The catch is that a few programs reassign it. In browsers it opens your history, in Photoshop it toggles CMYK preview, in Illustrator it switches to Outline view, and in Outlook it jumps to a folder. On Mac, redo lives on Cmd+Y or Cmd+Shift+Z instead.

When Ctrl+Y doesn’t behave the way you expect, check the app’s Edit menu the assigned shortcut is almost always listed there.

Master this single keystroke and you’ll spend less time clicking through menus and more time getting work done. Two fingers, two keys, hours saved.