Okular is an excellent application.
I have a large number of annotated PDFs. While I have ensured that I have saved the annotations to the PDF itself, some files have annotations saved locally.
The number of files is large with complex nested directories. Is there anyway, I can transfer the saved annotations to another computer? is the only feasible way to manually go about saving the annotations on each file?

Regards

Quoting https://docs.kde.org/stable4/en/kdegrap ... tions.html:

Since KDE 4.2, Okular has the "document archiving" feature. This is an Okular-specific format for carrying the document plus various metadata related to it (currently only annotations). You can save a "document archive" from the open document by choosing File → Export As → Document Archive. To open an Okular document archive, just open it with Okular as it would be e.g. a PDF document.

Thanks lueck, I'm aware of the document archiving feature (though I'd use the save as feature)>.
What I am looking for is a way to transfer the entire collection of annotations? For example, can I try to rsync the okular folder containing annotation details to the target computer? I've noticed that new copies of documents get handed the same annotation details (so much so that I get confused that annotations are saved to the file) even if the filename is distinct.

The annotations made in okular are stored in ~/.kde/share/apps/okular/docdata/ , with a *.xml file for each annotated *.pdf.
If you copy that entire folder to a different computer it shall do what you want.