Probably you have opened a photo pdf. No text is present in such a pdf document. You may then also get the following message: “No text was found in this document. Please apply OCR to have this document read aloud.” In the installation version of SprintPlus, you can check whether or not text is present in the document. To do this, you can use the keyboard’s F7 function key. After pressing F7, colored boxes will appear around all characters (letters, numbers) in the document. If no boxes appear, no text is present in the document. Press F7 again to remove the frames. If no text is present in the document, you must use an OCR program to convert the picture PDF to a text PDF. For SprintPlus (installation version), you can use the integrated OCR program. This may already be activated for your license, if not the OCR module can still be purchased.