# Groupdocs API References

> Class library and REST API reference for GroupDocs document-processing SDKs — namespaces, classes, methods, and code examples for .NET, Java, Node.js, and Python.

The entire API reference is also available as one compacted file: https://reference.groupdocs.com/llms-full.txt

Per-product references:

## GroupDocs.Conversion

Convert between 170+ document and image formats — PDF, Office, CAD, email, and more.

- Full documentation: https://reference.groupdocs.com/conversion/llms-full.txt
- Section index: https://reference.groupdocs.com/conversion/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/conversion.md

## GroupDocs.Viewer

Render documents and images to HTML, image, or PDF across 170+ formats.

- Full documentation: https://reference.groupdocs.com/viewer/llms-full.txt
- Section index: https://reference.groupdocs.com/viewer/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/viewer.md

## GroupDocs.Comparison

Detect and merge changes in text, style, and formatting across documents.

- Full documentation: https://reference.groupdocs.com/comparison/llms-full.txt
- Section index: https://reference.groupdocs.com/comparison/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/comparison.md

## GroupDocs.Markdown

Export PDF, Word, Excel, and other formats to clean Markdown.

- Full documentation: https://reference.groupdocs.com/markdown/llms-full.txt
- Section index: https://reference.groupdocs.com/markdown/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/markdown.md

## GroupDocs.Watermark

Add, find, edit, and remove watermarks in documents, images, and PDFs.

- Full documentation: https://reference.groupdocs.com/watermark/llms-full.txt
- Section index: https://reference.groupdocs.com/watermark/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/watermark.md

## GroupDocs.Merger

Merge, split, reorder, rotate, and manage pages across document formats.

- Full documentation: https://reference.groupdocs.com/merger/llms-full.txt
- Section index: https://reference.groupdocs.com/merger/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/merger.md

## GroupDocs.Metadata

Read, edit, and remove metadata in documents, images, audio, and video.

- Full documentation: https://reference.groupdocs.com/metadata/llms-full.txt
- Section index: https://reference.groupdocs.com/metadata/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/metadata.md

## GroupDocs.Assembly

Generate documents and reports from templates and data using LINQ syntax.

- Full documentation: https://reference.groupdocs.com/assembly/llms-full.txt
- Section index: https://reference.groupdocs.com/assembly/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/assembly.md

## GroupDocs.Search

Index and full-text search with fuzzy, synonym, regex, and faceted queries.

- Full documentation: https://reference.groupdocs.com/search/llms-full.txt
- Section index: https://reference.groupdocs.com/search/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/search.md

## GroupDocs.Parser

Extract text, images, metadata, and structured data from documents.

- Full documentation: https://reference.groupdocs.com/parser/llms-full.txt
- Section index: https://reference.groupdocs.com/parser/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/parser.md

## GroupDocs.Editor

Load, edit, and save documents through an HTML round-trip.

- Full documentation: https://reference.groupdocs.com/editor/llms-full.txt
- Section index: https://reference.groupdocs.com/editor/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/editor.md

## GroupDocs.Annotation

Add, edit, and remove annotations — comments, highlights, shapes, and stamps.

- Full documentation: https://reference.groupdocs.com/annotation/llms-full.txt
- Section index: https://reference.groupdocs.com/annotation/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/annotation.md

## GroupDocs.Signature

Sign and verify with digital, barcode, QR-code, text, image, and stamp signatures.

- Full documentation: https://reference.groupdocs.com/signature/llms-full.txt
- Section index: https://reference.groupdocs.com/signature/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/signature.md

## GroupDocs.Redaction

Remove sensitive text, metadata, and annotations from documents.

- Full documentation: https://reference.groupdocs.com/redaction/llms-full.txt
- Section index: https://reference.groupdocs.com/redaction/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/redaction.md

## GroupDocs.Classification

Classify documents and text with IAB-2, Documents, and Sentiment taxonomies.

- Full documentation: https://reference.groupdocs.com/classification/llms-full.txt
- Section index: https://reference.groupdocs.com/classification/llms.txt
- Overview (Markdown): https://reference.groupdocs.com/classification.md