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DocumentFormat.OpenXml

The Open XML SDK provides tools for working with Office Word, Excel, and PowerPoint documents. It supports scenarios such as: - High-performance generation of word-processing documents, spreadsheets, and presentations. - Populating content in Word files from an XML data source. - Splitting up (shredding) a Word or PowerPoint file into multiple files, and combining multiple Word/PowerPoint files into a single file. - Extraction of data from Excel documents. - Searching and replacing content in Word/PowerPoint using regular expressions. - Updating cached data and embedded spreadsheets for charts in Word/PowerPoint. - Document modification, such as removing tracked revisions or removing unacceptable content from documents.

docxofficeopenxml-formatpptx
github.com/dotnet/Open-XML-SDKMITMicrosoft4.6k · 606 forks · 61 contributors
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Compares against 3.5.1 (latest stable)
Latest Stable3.5.1Mar 18, 2026
Latest Beta3.0.0-beta0003Sep 5, 2023
Release cadenceEvery 3 months
Last releaseMar 18, 2026
Open advisories0
Changelog quality74% curated
GitHub Releases + CHANGELOG, gaps for some releases
SecurityYou're on
3.x
STABLE · RCPRE-RELEASE2024AprJulOct2025AprJulOct2026AprJulOct

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Breaking changes and a migration checklist for each major version