When open a pdf file in Xournal, how can I
- select original text
- show the bookmarks (i.e.outlines) on a separate panel?
- search in the original text and the added annotated text?
Thanks!
To use Xournal to highlight or add text to a PDF file, select File > Annotate PDF (you can also chose the usual File > Open, but make sure you then select to view all files, not just Xournal files) and select the PDF you want to annotate or highlight text.
Xournal cannot save a file in PDF format but you can easily select File > Export to PDF to achieve something similar so it's a viable solution for those who are looking for a reliable tool to annotate/highlight text in PDF files on Linux.
Source: HIGHLIGHT TEXT OR ANNOTATE PDF FILES IN UBUNTU WITH XOURNAL.