GroupDocs API References

Complete API documentation for GroupDocs document processing libraries across .NET, Java, Node.js, and Python. Browse classes, methods, and code examples for every supported product.

GroupDocs Conversion
GroupDocs.Conversion icon

Enhance productivity and streamline workflows with fast batch document conversion APIs in any cross platform application.

.NET Java Node.js Python
GroupDocs Viewer
GroupDocs.Viewer icon

Accelerate and simplify document or image viewing in any cross-platform application with native document viewer APIs.

.NET Java Node.js Python
GroupDocs Comparison
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Compare and merge documents across formats. Detect differences in text, styles, and formatting with high accuracy.

.NET Java
GroupDocs Markdown
GroupDocs.Markdown icon

Document processing SDK to export PDF, Word, Excel, and other formats to Markdown for seamless integration with the gen AI ecosystem.

.NET Python
GroupDocs Watermark
GroupDocs.Watermark icon

Add, remove, search, and manage watermarks in PDF, Word, Excel, images, and other document formats programmatically.

.NET Java
GroupDocs Merger
GroupDocs.Merger icon

Merge, split, reorder, swap, and remove pages from PDF, Word, Excel, PowerPoint, and other document formats.

.NET Java
GroupDocs Metadata
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Read, edit, remove, and export metadata from documents, images, audio, and video files in your applications.

.NET Java
GroupDocs Assembly
GroupDocs.Assembly icon

Generate documents and reports from templates by populating them with data from various sources including databases, XML, and JSON.

.NET Java
GroupDocs Search
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Advanced full-text search across documents with support for indexing, fuzzy search, synonyms, and faceted search.

.NET Java
GroupDocs Parser
GroupDocs.Parser icon

Extract text, images, and metadata from PDF, Word, Excel, and other document formats. Parse templates and structured data.

.NET Java
GroupDocs Editor
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Edit Word, Excel, PowerPoint, and other document formats by converting them to HTML, modifying, and saving back.

.NET Java Node.js
GroupDocs Annotation
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Add, edit, and remove annotations such as comments, highlights, drawings, and stamps from documents and images.

.NET Java
GroupDocs Signature
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Add digital, barcode, QR code, text, image, and stamp signatures to documents. Verify and search existing signatures.

.NET Java Node.js
GroupDocs Redaction
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Redact sensitive text, metadata, annotations, and images from PDF, Word, Excel, and PowerPoint documents.

.NET Java
GroupDocs Classification
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Classify documents and text using IAB-2, Document, and Sentiment taxonomies. Automate content categorization.

.NET

AI Agents & LLM Friendly

GroupDocs products are designed for seamless integration with AI agents, LLMs, and automated pipelines.

  • MCP ServerLLMs query GroupDocs documentation on-demand via Model Context Protocol, reducing token usage and improving accuracy.
  • AGENTS.mdMachine-readable documentation bundled in packages for automatic discovery by AI coding assistants like Claude, Copilot, and Cursor.
  • Markdown ExportConvert PDF, Word, Excel to clean Markdown optimized for RAG pipelines and text chunking with GroupDocs.Markdown.
  • Machine-Readable DocsFull documentation as llms.txt and llms-full.txt for direct LLM consumption. Also available per product.

Documentation & Resources