Make IndiPDF default pdf file handler in Zorin 18

[sglbl]

@prairienewf

I have done that but on right click, I get "Open with other application" and IndiPDF does not appear in the list after installing the deb file. Also, the option to select an application as default doen't appear in that window. When I scroll down through the list, IndiPDF isn't listed.

I just downloaded indiPDF to test it for you.
And you are completely right that GNOME's default file manager Nautilus doesn't show it.

Since Nautilus sucks like always, I tried with Dolphin File Manager and it shows it.

As I said here, maybe you can try with Dolphin File Manager (or consider other pdf annotation apps such as Okular/OnlyOffice/Xournal..)

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