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Version Differences

I have a client who use Aspose Words and PDF in .NET. They have used them for many years and although they have had issues, they have managed to find workarounds to produce the documents they require. They are currently using the following versions:

Aspose Words v5.1.0.0

Used for accepting Word mail merge templates

· Aspose PDF
v3.7.0.0 Used to generate PDF outputs from their system

They have the current issues:

  • Aspose PDF generator does not render perfect
    results every time (as per original Word template). They
    have found a work around that works to a degree; to use table layouts on
    the entire page
  • Aspose Words only accepts Word 2003 “.doc”
    format files; they now use Word 2010 and 2013 files (“.docx” format)


They are considering upgrading PDF and Words to the latest versions but they are concerned that this will cause further issues. Does anyone have an understanding of the technical and functional differences between Words v5.1.0.0 and the latest version (v13.2.0.0) and the same for PDF (v3.7.0.0 to v7.7.0.0)?

Any help will be greatly received.

T Thanks in advance,



Hi Alec,

Thanks for contacting support.

I am a representative from Aspose.Pdf team. The version of Aspose.Pdf for .NET which you are using is quite old and there have been significant changes/improvements in this product till the latest release. Also please note that since July-2011, Aspose.Pdf.Kit for .NET (legacy) has been merged into Aspose.Pdf for .NET so now this single component provides the feature to create as well as manipulate existing PDF files.

Now concerning to your actual requirement on converting Word files to PDF, please note that now you can use a single component i.e. Aspose.Words for .NET to fulfill your requirements. The approach of first converting Word document contents into XML format and then binding this XML file with Aspose.Pdf for .NET to generate a PDF file out of it, was a legacy approach and now you can convert Word files to PDF format by only using Aspose.Words for .NET.

I am also moving this thread to respective forum where I believe my fellow worker from respective team would be in better position to answer your query from Aspose.Words perspective.

Hi Alec,

Thanks for your inquiry. I am a representative from Aspose.Words team.

You are using a very old version of Aspose.Words. As my colleague has shared that you can use only one component (Aspose.Words) for Mail Merge operation and convert document into PDF. Please read following documentation link for migrating from Earlier Versions of Aspose.Words.

Please download the latest version of Aspose.Words for .NET 13.2.0 from here:

Moreover, I suggest you please read about mail merge and converting document into PDF file format from here:

Please feel free to ask if you have any question about Aspose.Words, we will be happy to help you.