| A scanner basically just takes a picture of a page - lots and lots of random dots which are kinda assembled into letters and words through the magic of the human eye (or - inaccurately - through Optical Character Recognition software). Which is why they're both poor and big. A PDF convertor software thingy is the electronic equivalent of printing the document - character by character, not dot by dot - to an electronic file. Try selecting (and copying/pasting) text out of a PDF. You can do it if it's been "electronically printed" from the original eg Word doc - you can't if it's been scanned.
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David P. |