With Mojave, I use to open multiple pdf at once with the old Preview9.0.app (version of Sierra)

It doesn't work anymore with Catalina because of a conflict between Preview9.0.app and the new PDFkit framework.

Is there any way to embed the old PDFkit framework in Preview9.0.app ? Or redirect PDFkit calls to the old one ?

  • Is it a 32-bit app? Oct 10, 2019 at 12:36
  • 1
    No, Preview 9.0 works normally except for pdf just because of PDFkit I guess.
    – Praleonea
    Oct 10, 2019 at 12:39
  • Not without writing your own application. Why do you need Sierra's Preview in Mojave? Also, what exact errors are you getting in Catalina?
    – benwiggy
    Oct 10, 2019 at 12:47
  • Preview9.0 crashes while opening any pdf. I need it because it can open very multiple pdf at once without separate tabs and search across very fastly. Application Specific Information: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[PVPDFView setEnablePageShadows:]: unrecognized selector sent to instance 0x7feaa97a1e60' terminating with uncaught exception of type NSException abort() called
    – Praleonea
    Oct 10, 2019 at 12:56
  • You can still open multiple PDFs in the same window, if you want.
    – benwiggy
    Oct 10, 2019 at 13:01

2 Answers 2


I'm sure it was possible ! Cormiertyshawn895 dit it ! Thanks to him ! https://github.com/cormiertyshawn895/Retroactive/issues/1


Preview, like many other Apple-bundled apps, is designed to use the Operating System's frameworks. There is no practical way that the application can be reconfigured to use a separately supplied framework without having the source code and altering the application before compiling an altered version.

It's also worth mentioning that PDFKit in Sierra has many critical bugs!

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