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Fastest PDF-> text library for .NET project

I am trying to create an application that will be basically the catalog of my PDF collection. We are talking about 15-20 GB containing tens of thousands of PDF files. I also plan to include a full-text search engine. I will use Lucene.NET for search (in fact, NHibernate.Search) and a library for converting PDF-> text. What would be the best choice? I reviewed this:

  • Pdfbox
  • pdftotext (from xpdf) via C # wrapper
  • iTextSharp

Edit: Another good option is to use iFilters. How well (speed / quality) will they perform (Foxit / Adobe) compared to these libraries?

Commercial libraries are probably out of the question, as this is my private project, and I don't have a budget for commercial solutions, although PDFTextStream looks very good.

From the fact that I read pdftotext is faster a lot than PDFBox. How well does iTextSharp compare to pdftotext? Or maybe someone can recommend other good solutions?

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If this is for a private project, will this be an ongoing conversion process? For instance. after you converted 15-20Gb, are you going to convert?

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Foxit PDF IFilter

http://www.foxitsoftware.com/pdf/ifilter/

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Foxit PDF Reader/Text Extraction, , Foxit.

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Table: PDFFiles
PDFFileID
PDFFilePath
PDFTitle
PDFAuthor
PDFKeywords
PDFFullText....

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Source: https://habr.com/ru/post/1755951/

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