The was a picture that I was looking at in my computer, I drew a line with the preview tool.

Since my was slow and the app was not responsive, I force quited Preview.

I opened the document and it saved the line I drew on the picture as part of the picture. I don't have the original picture but I don't want the line to be there.

Can I undo what I have done via a backup or version of this file?

2 Answers 2


With Preview open:

File > Revert To > Browse All Versions

Select the original version.

  • 7
    @LeonelCabreraHerrera If that answer solved the problem, please indicate it by accepting the answer.
    – Nimesh Neema
    Jul 22, 2018 at 7:34

Click command z

(you can also click on the edit icon on your screen and click undo)

  • Does Undo work if the file got closed and reopened as described in the question?
    – nohillside
    Feb 13, 2021 at 21:00

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