Open XML SDK 2.5 for Microsoft Office

This download provides strongly typed part and content classes for use with Open XML documents.
  • Note:There are multiple files available for this download.Once you click on the "Download" button, you will be prompted to select the files you need.


    File Name:



    Date Published:


    File Size:

    2.5 MB

    24.9 MB

      Open XML is an open ECMA 376 standard and is also approved as the ISO/IEC 29500 standard that defines a set of XML schemas for representing spreadsheets, charts, presentations, and word processing documents. Microsoft Office Word 2007, Excel 2007, PowerPoint 2007, and the later versions all use Open XML as the default file format.

      The Open XML file formats are useful for developers because they use an open standard and are based on well-known technologies: ZIP and XML.

      The Open XML SDK 2.5 for Microsoft Office is built on top of the System.IO.Packaging API and provides strongly typed part classes to manipulate Open XML documents. The SDK also uses the .NET Framework Language-Integrated Query (LINQ) technology to provide strongly typed object access to the XML content inside the parts of Open XML documents.

      The Open XML SDK 2.5 simplifies the task of manipulating Open XML packages and the underlying Open XML schema elements within a package. The Open XML Application Programming Interface (API) encapsulates many common tasks that developers perform on Open XML packages, so you can perform complex operations with just a few lines of code.

      The tools package contains the Open XML SDK v2.5 Productivity Tool for Office and the hyperlink to documentation for the Open XML SDK 2.5. The Open XML SDK 2.5 Productivity Tool for Microsoft Office provides a number of features designed to improve your productivity and accelerate your learning while working with the SDK and Open XML files. Features include the ability to generate Open XML SDK 2.5 source code based on document content, compare source and target Open XML documents to reveal differences and to generate source code to create the target from the source, validate documents, and display documentation for the Open XML SDK 2.5 Classes, the ECMA376v1 standard, and the Microsoft Office implementation notes.

      Note: For production of .NET 3.5 applications, the Open XML SDK 2.0 is available.
  • Supported Operating System

    Windows 7, Windows 8, Windows Server 2003 R2 (32-Bit x86), Windows Server 2003 R2 x64 editions, Windows Server 2003 Service Pack 2, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Vista Service Pack 1, Windows Vista Service Pack 2, Windows XP Service Pack 3

      This download requires the following:
      • The Microsoft .NET Framework version 4.0.
      • Up to 300 MB of available disk space.
    • To install this download:
      1. Download the files by clicking the Download link and saving the files to your hard disk drive.
      2. Double-click the OpenXMLSDKV25.msi or OpenXMLSDKToolV25.msi program file on your hard disk drive to start the setup program.
      3. Follow the instructions on the screen to complete the installation.

        Note: If the .NET Framework 4.0 is not already installed on the computer, the setup wizard asks you to install the .NET Framework 4.0 first. The default installation path of the SDK is %systemdrive%\Program Files\Open XML Format SDK\V2.5\.
      Instructions for use:
      Once you have installed this download, you can use this reference to develop custom solutions based on the Open XML file formats.
      In Open XML Format SDK Forum, sample code of new 2.5 classes and technical help are provided for Open XML SDK 2.5.
    • Updates in the SDK 2.5:
      • New classes for file format extensions in Microsoft Office 2013
      • Built on .NET Framework 4.0
      • Reads the ISO Strict Format
      • Fixes to Open XML SDK 2.0