In order to work with a scanned PDF file, do you need to have OCR software?
Depending on what you want to do with the file, you may need OCR software in order to access the text. When you simply scan a document, it becomes available to you in digital form only as an image, but the text remains inaccessible. In order to work with the actual text content, you need to have OCR software so that your computer can recognize the text.
To download OCR software for free, get the free trial version of Maestro Recognition Server from CVISION: