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From A...@swmc.com
Subject Re: Text extraction results in strange characters
Date Thu, 23 Jun 2011 16:12:52 GMT
The type of font being used is probably embedded and mapped to images of 
the characters.  This works great for viewing the document, but if you 
don't have characters (ASCII or Unicode), you're not going to get 
reasonable results when copying and pasting.  If my theory is correct, 
you'll find that you will also be unable to copy & paste using Adobe 
Reader.  The only way to get the text out of a file like this would be to 
convert it to an image, and then try to use ocr (optical character 
recognition) to extract the text.  As you probably already know, OCR is 
not 100% accurate, but it'd be better than nothing.

I suggest we add this to the FAQ on the website.  I've seen it come up a 
few times, and it's a very interesting explanation.


Daniel Sánchez González <dsanchezg@gmail.com>
06/23/2011 04:55
Text extraction results in strange characters

When I try to convert a PDF to text the operation results in strange
characters. If I copy some text from PDF file and paste it in a text 
I've got the same result.

What is wrong?

Thanks in advance.


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