I wanted to search inside a PDF with Adobe Acrobat Reader for MacOS (or the one built in with MacOS). I want to search, for example, for the capital letter "U".
Is it possible and, if yes, how?
Ask Different is a question and answer site for power users of Apple hardware and software. It only takes a minute to sign up.
Sign up to join this communityA tutorial online here for Adobe Acrobat Reader indicates in step 4 how to do a case-sensitive search, which is what you're looking for.
Press Ctrl-F
to start a search in Adobe Acrobat Reader. Enter the letter U
and then tick (select) the check-box next to "Case-Sensitive" search. Press the Search
button to start the search.