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iText is a PDF library that allows you to CREATE, ADAPT, INSPECT and MAINTAIN documents in the Portable Document Format (PDF):
- Generate documents and reports based on data from an XML file or a database
- Create maps and books, exploiting numerous interactive features available in PDF
- Add bookmarks, page numbers, watermarks, and other features to existing PDF documents
- Split or concatenate pages from existing PDF files
- Fill out interactive forms
- Serve dynamically generated or manipulated PDF documents to a web browser

iText is used by Java, .NET, Android and GAE developers to enhance their applications with PDF functionality.
iTextSharp is the .NET port.

Several iText engineers are actively supporting the project on on StackOverflow: http://stackoverflow.com/questions/tagged/itext



  • PDF generation
  • PDF manipulation (stamping watermarks, merging/splitting PDFs,...)
  • PDF form filling
  • XML functionality
  • Digital signatures


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Reviews (121)

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Highest Rated

1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

Yes, but migration from 4.1.x to 5.0, may be long and hard, if you used removed API for Table, Cell ... Second complication is changed most of properties to methods. (e.g. Widths). So if you used Object Initializers the better way is stay with. 4.1.x version


Lowest Rated

1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

This library is so poorly documented and badly designed it's not even funny.

1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

Have been looking for a replacement for FDF Toolkit (which only works now in IE) to fill PDFs. Was able to get old code working for all browsers (IE, FF, Chrome, Safari, Edge) in less than a day using iTextSharp. See some complaints about lack of documentation. Don't see this an issue as source code is provided. Which is superior to any secondary documentation.

Posted 04/06/2017
1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

Hi I can not register itextsharp.dll in windows XP Can you help me?

Posted 10/20/2016
1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

Try the vb.net add editable text box to pdf directly and easily with high quality on rasteredge page

Posted 04/11/2016
1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

I think it is probably the best PDF library in the market. I have tried many of them and they either aren't as simple or simply don't have the features. On the other hand, it lacks some documentation, which in someway they do mitigate with their engineers in Stackoverflow. Overall, I'm very happy with the library. It's simple to use, the use of most of the features are around Stackoverflow, and it has a lot (and I mean a lot) of features. My favourite was being able to fill in AcroFields in PDFs ;)

Posted 10/04/2015
1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

Um, can someone write some documentation? Sheesh. I've never seen so little documentation. It's like you didn't even try.

Posted 04/23/2015
All Reviews


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