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I think this is an Ubuntu problem because I am able to do simply double click items on Zotero if my default application is set to native PDF viewer. However, if my default application is Okular, I am not able to double click items in Zotero. I have to navigate to where the PDF is located (Show file option in Zotero) and double click to open.

I think the issue is that I have installed Okular using flatpak. This is because the latest version was not available in the Software store (Okular Version 21.12.1).

I followed this video to make a change: https://www.youtube.com/watch?v=qf3VUrDCBJs, but I wasn't able to do this. I also tried to navigate through Zotero to where Okular is installed on my system, but Zotero does not have the permission to go there. Even if I have the permission, I'm not sure what's an equivalent of a .exe file that I can just "set" in Zotero.

How do I set the default application to Okular for Zotero 6?

BeastOfCaerbannog
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Pss
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  • Hello. I am confused what does an .exe have to do with Zotero. – David Apr 15 '22 at 14:38
  • Zotero has an option of setting a default pdf via it's menu. However, when I click on custom, it opens up an file dialog box where I can navigate to the installed application. I don't know what's an equivalent of .exe for Ubuntu. – Pss Apr 15 '22 at 15:17
  • There is not one. The conclusion I would make is this is a Windows only feature. I suggest you ask the people that make the app how to deal with this. https://forums.zotero.org/discussions – David Apr 15 '22 at 15:19
  • Nope. I am on Ubuntu and I have Zotero 6 installed. The problem isn't with Zotero... It's just that I am not able to navigate to where Okular is installed on Ubuntu. The custom dialogue box says that I don't have permissions to navigate to that location. – Pss Apr 16 '22 at 13:16

1 Answers1

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Try the following steps:

  1. Open Zotero.

  2. Go to Edit → Preferences.

  3. Click the dropdown menu on Open PDFs using and select Custom...

    Zotero Preferences window

  4. In the window that opens navigate to the Okular installation directory, which should be /var/lib/flatpak/app/org.kde.okular/x86_64/stable/active/export/bin, select the org.kde.okular file and press Open on the top right of the window.

    Choose Application window

  5. Then close the Zotero Preferences window and that's it! You should now be able to double-click on files in Zotero and have them opened in Okular.

BeastOfCaerbannog
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