How do you change the default document viewer to Okular?

Question

I have just started using Okular and I love it. It has a lot of functionality that I need when I am in pdfs and it already opens up epubs automatically. How to I get it to open pdfs by default instead of "Document Viewer?"

I appreciate the help!

Answer 1

According to here, Right click the file of the format you want, select properties:

Go to the open with tab, select the program you want to be the default for that type of file, then press the button Set as Default:

Answer 2

First open a terminal and use this command:

gedit ~/.local/share/applications/defaults.list

After opening it, Under the [Default Applications] section add a line like this

application/pdf=okular.desktop;

Now save the file and exit gedit.

Answer 3

In short, if I remember correctly :

• Right click on a PDF,
• Properties,
• Open with,
• Select an app,
• Set as default.