I switched to a Windows computer recently.

On Mac, typically apps and websites have the shortcut to redo as cmd + shift + Z. On Windows the shortcut is typically ctrl + Y.

On Stack Exchange on Mac, in the editor for questions cmd + Y also works to redo, but on Windows the Mac convention is not provided as an alternative, with ctrl + shift + Z actually undoing.

Can this be changed to make ctrl + shift + Z redo, or at least make it not undo? This would be much more user-friendly to people used to Mac.

(I am on Firefox 78.0.1 on Windows 10.0.18363 Build 18363).

  • 2
    I am not so sure that this feature is under control of the SE engine, are you? Jul 5, 2020 at 18:13
  • 1
    I have just tried it, and it does not undo.
    – Ollie
    Jul 5, 2020 at 18:15
  • I second the previous comment. Ctrl shift z does not undo anything on Stack Exchange on my Windows computer. Jul 5, 2020 at 18:18
  • I also can't reproduce, but I'm on Windows 7. Jul 5, 2020 at 18:22
  • @πάνταῥεῖ it is under websites' control -- if you go to SE chat it redoes, in Google Docs it redoes, etc. Jul 5, 2020 at 18:22
  • 3
    Ctrl + Shift + Z works fine to redo on Windows 10 2004 on Chrome 83.0.4103.116 and Firefox 78.0.1. This is a bug specific to you it seems. Jul 5, 2020 at 18:41

1 Answer 1


It does not undo, it already does redo. Here is a simple test: Go to the answer box below, type something, and delete it. Then click the undo button, and you will see the redo button highlight. Instead of clicking it, click Ctrl+Shift+Z, and it should redo what you did.
I have done this in Chrome and in Firefox.

  • 2
    You're right, this bug does not happen now. Jul 5, 2020 at 18:49

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