Can I find and highlight certain text automatically? I have a document 4k+ pages and need to highlight a recurring word.

There are several ways this can be done in a PDF file:

- In Acrobat you can do it using a script, although processing 4K pages will probably be too much for a script to handle.

- In Acrobat Pro you can use an Action to mark the words for removal and then use a script to convert that redaction markup into a highlight.

- It's also possible to do it using a stand-alone tool.

I've developed all three tools. For example, this script : Custom-made Adobe Scripts: Acrobat -- Highlight All Instances of a Word or Phrase in a PDF