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Why is XPDF missing words and files when extracting text from pdf files?

Posted on 2006-06-23
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Last Modified: 2012-06-21
Hello all,

I have a search engine that runs on our website server.  It uses an inverted index created by an indexing routine.  In order to index PDF files, the indexer calls the utility XPDF ( http://www.foolabs.com/xpdf/ ) to extract the text.

Mostly it works just fine, BUT:

- sometimes it misses words.  For example, if a PDF document is konwn to contain the phrase "blue sky", after indexing a search may find "blue", but not "sky"

- sometimes it skips files completely.  This seems to be accompanied by cryptic error messages like "Bad Annotation".

Anyone have insights into XPDF?

Thanks.
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Question by:xfvgdrthbdtyvhgscv
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Accepted Solution

by:
[ fanpages ] earned 500 total points
ID: 16973565
I do not have any previous experience of XPDF.

Have you tried contacting the software authors?  Perhaps there is a fault with it that they are not aware of.

You may also like to extract your PDF based text into other formats using these tools:

HTML, or XML:
[ http://pdftohtml.sourceforge.net/ ]

RTF, MS-Word DOC, or Text (TXT):
[ http://www.verypdf.com/pdf2word/pdf-to-doc/pdf-to-txt.html ]

HTML, TXT, BMP or JPG:
[ http://www.topshareware.com/Paq-PDFTools-(-pdf2txt-pdf2html-pdf2htm-pdf-to-txt-pdf-to-html)-download-12417.htm ]


BFN,

fp.
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by:xfvgdrthbdtyvhgscv
ID: 16979619
Well, although it doesn't actually answer the question, I guess I'll have to award the points by default.
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LVL 35

Expert Comment

by:[ fanpages ]
ID: 16979848
You could have waited for further Expert input; you need not have closed the question at all.

Did you contact the software vendor?
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