GroupDocs.Merger for Python via .NET Overview Leave feedback

GroupDocs.Merger for Python via .NET is a native Python library that merges, splits, and reorganises documents across 70+ supported formats — DOCX, PDF, XLSX, PPTX, images, Visio diagrams, eBooks, archives, and more. It runs entirely on-premise, requires no Microsoft Office or Adobe Acrobat installation, and ships as a pre-built wheel on Windows, Linux, and macOS.

Typical uses include:

• Multi-document consolidation — assemble a single report or package from multiple source files in one API call.
• Selective page merges — pull specific pages or page ranges from several documents and combine them into a new document.
• Document assembly automation — build dynamic documents programmatically as part of batch or pipeline workflows.
• Access control — protect sensitive documents with passwords and manage password changes or removal.
• Page-level preparation — reorder, rotate, extract, or remove individual pages before a document reaches its final destination.

Merge two PDF files into a single document with just a few lines of code:

from groupdocs.merger import Merger

def merge_pdf_documents():
    # Load the first PDF as the merge base
    with Merger("./input.pdf") as merger:
        # Append the second PDF
        merger.join("./input2.pdf")
        # Save the merged PDF
        merger.save("./output.pdf")

if __name__ == "__main__":
    merge_pdf_documents()

Binary file (PDF, 418 KB)

For finer control, use the *JoinOptions classes to join only selected pages and preserve PDF bookmarks:

from groupdocs.merger import Merger
from groupdocs.merger.domain.options import PageJoinOptions, PdfJoinOptions

def merge_pdf_with_options():
    # Load the first PDF as the merge base
    with Merger("./input.pdf") as merger:
        # Append only pages 1 and 3 from the second PDF
        merger.join("./input2.pdf", PageJoinOptions([1, 3]))

        # Append a third PDF and preserve its bookmarks
        pdf_join = PdfJoinOptions()
        pdf_join.use_bookmarks = True
        merger.join("./input3.pdf", pdf_join)

        # Save the result
        merger.save("./output.pdf")

if __name__ == "__main__":
    merge_pdf_with_options()

Binary file (PDF, 418 KB)

1. Install the package — Installation walks through PyPI and offline wheel installation for Windows, Linux, and macOS.
2. Run your first example — Quick Start Guide merges, extracts pages, and splits a document in under five minutes.
3. Explore runnable examples — How to Run Examples clones the GitHub repository and runs every documented scenario locally or in Docker.
4. Use it in depth — the Developer Guide covers every API surface with runnable, copy-paste code examples.
5. Plug it into AI pipelines — Agents and LLM Integration explains the MCP server, AGENTS.md, and how to build AI-driven document assembly pipelines.