PDF, as such, does not have a “built in” OCR. The ability to OCR will be found in other software - such as Abbyy Fine Reader, which we use, daily. PDF is just a document format to hold the finished document in a way which will be read in the same way that it was saved. It used to be just for work going to the printers - so you knew that the final print would be the same as the proof. These days it has taken over from fax as probably being THE way to transmit printed and signed documents. See also Word To Pdf Conversion (and others) of course However, it is now easy enough to find a programme which will allow you to edit a PDF so care must be taken to “lock” the file.
To lock a file, simply go to the file menu and add the file name (or file extension) exactly as it appears on the PDF: Once this is done simply close the menu and the files will remain the way they were. Also note that when the document has been saved, a file name is typically appended. This can be a different file name for each document, or simply one with a particular file extension. See also Word To PDF Conversion (and others) of course How to Turn Text Into PDF (for Printing) This section demonstrates how this is done, and also what you need to know afterwards! Open your file, then the file menu: Click on Properties. Then in Edit Properties select PDF or PDF Document from the drop-down list. Or you can search for it here: Then when it shows up in the list select it. This will give you the option to save.