I updated from Big Sur to Monterey yesterday on my M1 Air but seem to have lost the option to open multiple pdfs in same window using Preview. Here are the settings: enter image description here enter image description here

  • Not sure what the exact choices were under Big Sur but, as an option, you can merge the pdf windows after opening them so that they appear in the same window but under different tabs in Monterey. To do that, go to Window -> Merge All Windows while in Preview.
    – Alper
    Oct 29, 2021 at 6:32
  • Thank you @Alper, that worked! Oct 29, 2021 at 15:26

1 Answer 1


From the official user guide at https://support.apple.com/en-gb/guide/preview/prvw1085/mac

Note: To open multiple PDFs in the same window, go to System Preferences > General , then choose Always from the “Prefer tabs when opening documents” pop-up menu. See Change how folders open in the Finder on Mac.

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