Highlight all instances of a given word in a PDF.

I want to highlight, preferably permanently, all instances of a search result in a PDF. For example, I want to highlight all examples of the word 'class' in a piece about Karl Marx to make finding the material I need to make notes on easier.

I suspect the reason I can't do this on either Foxit or Adobe Reader is that they both re-scan the document every time you highlight a search result, and this takes a long time.

Is it possible at all?

Solution 1:

Open the PDF using Firefox browser and click the "highlight all" button after you open the Find dialog.

Find Dialog

Solution 2:

Once you have pressed Ctrl+F and searched the word, if you press Shift+Enter, it would higlight all the words matching your inquiry