The most used open source software for this (and many other mime types) is tika: http://tika.apache.org/
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Van: Code for Libraries [[log in to unmask]] namens Bill Janssen [[log in to unmask]]
Verzonden: dinsdag 21 juni 2011 19:19
Aan: [log in to unmask]
Onderwerp: Re: [CODE4LIB] PDF->text extraction

Owen Stephens <[log in to unmask]> wrote:

> The CORE project at The Open University in the UK is doing some work on finding similarity between papers in institutional repositories (see http://core-project.kmi.open.ac.uk/ for more info).  The first step in the process is extracting text from the (mainly) pdf documents harvested from repositories
>
> We've tried iText but had issues with quality
> We moved to PDFBox but are having performance issues
>
> Any other suggestions/experience?

UpLib uses xpdf's pdftotext, which works well.  There's also code in
UpLib to find similarities between papers :-).

Bill