Overview

This article explains how to detect text that's represented as a graphic in PDF files. It helps hide actual text and make text in graphics prominent. This is important especially when a publisher wants to process PDFs before uploading them to the FTP server. 

Information

1. Open the PDF file using Adobe Acrobat Reader;
2. From the menu bar, click File > Preferences > General Preferences;
3. Select the checkbox Use Greek Text Below … Pixels;
4. In the Pixels text box, enter 40; 

5. Click OK.
6. All text that is represented as text, and not graphics, will be obscured.
7. Any remaining readable text is represented as graphics.