Quote:
Originally Posted by Bookchin
Thanks. Are there types of PDFs which are not page scanned?
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One easy way to tell is if Adobe Reader (or other similar program) allows you to select text the same as you could in a word processor. A non-scanned PDF will let you highlight text this way. If you used the PDF export option in MS Word for example it will create the PDF this way. Or if you scanned it with OCR (optical character recognition) would create a PDF of that type. A so called "scanned" PDF will select the whole page as if it's one big picture (which is basically is). Most of the time when people scan something into a PDF it's going to create this "picture" version of the document. This oversimplifies it a bit, but hopefully gives you the general idea.
The other big difference is a non-scanned PDF can have the text directly edited with an appropriate program. It can also be reflowed for display (again with appropriate program), whereas the scanned version can't be edited or reflowed (since it's a picture).