Hi All.

Newbie here. I like to highlight certain words in a PDF document via the command line in Ubuntu. I have a lot of words I like to highlight in a PDF document.

Better yet if available: I have a text file with words, one word per line. Is there a way to tell Okular to read the words in the text file and highlight all these words in the PDF document in yellow?

If not, I can do it one word at a time but I need to do it via the command line - one word at a time.

Or is this not possible with Okular?

Thank you!

Hello! You can search and highlight any phrase from the command line:

Code: Select all

okular --find "some phrase" filename.pdf

Other available command line options can be viewed via

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okular --help

Perhaps the annotation mechanism in PDF would be suitable for your task. It is not difficult to add annotations to a PDF file programmatically, for example with a Python script:

Code: Select all

import fitz

highlights = ["data", "load"]

doc = fitz.open("input.pdf")
for page in doc:
    for text in highlights:
        quads = page.search_for(text, quads=True)
        for quad in quads:
            annot = page.add_highlight_annot(quad)
            annot.update()

doc.save("output.pdf")

https://pymupdf.readthedocs.io/en/lates ... tions.html