Use Export PDF to Word/Excel to convert PDF files to editable Microsoft Word, Microsoft Excel, or RTF files. Adobe CreatePDF supports optical character recognition, or OCR, when you use ExportPDF to Word/Excel.
OCR is the conversion of images of text (scanned text) into editable characters, so that you can search, correct, and copy the text.
When OCR is enabled, Adobe PDF Pack performs OCR on PDF files that contain images, vector art, hidden text, or a combination of these elements. (For example, Adobe PDF Pack performs OCR on PDF files created from scanned documents.) Adobe PDF Pack also performs OCR on text that it can't interpret because the text was encoded incorrectly in the source application.
If you don't want Adobe PDF Pack to convert images of text to editable text, consider disabling OCR. When OCR is disabled, Adobe PDF Pack can process the document more quickly. Likewise, if the PDF you're converting contains a mix of formatted text and graphics, and you want to leave the graphics as is, disable OCR. Finally, you can disable OCR if you find that Adobe PDF Pack doesn't interpret text correctly (because it was encoded incorrectly).