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Overview

ONLYOFFICE Document Builder is a cross-platform Office and PDF SDK for creating, editing, and converting Office Open XML (DOCX, XLSX, PPTX) and PDF files in server, mobile, or desktop applications.

It enables document generation without running a full editor, automating content creation with templates or database integration. Lightweight yet powerful, it seamlessly integrates with document management systems, CRMs, and other applications via its JavaScript API.

How to use​

ONLYOFFICE Document Builder provides SDKs for various programming languages, allowing seamless integration into your applications.

  • Python. Generate and modify documents in scripts or backend services.
  • C++. Use the C++ library for high-performance document processing.
  • COM. Integrate with Windows applications using the Component Object Model (COM) interface.
  • Java. Work with the Java SDK for document creation and editing in enterprise applications.
  • .Net. Develop cross-platform applications for Windows, Linux, and macOS using the .NET SDK.

Integrate SDK into your own application. To install ONLYOFFICE Document Builder, visit this page. After you download and unpack the files, the library is ready for integration.