Merge DOCX .NET Plugin

Combine Word (DOCX) documents into one document with a few lines of .NET code—no Microsoft Word required.

Quick Start

Get started in minutes with our simple three-step process to merge DOCX using our .NET plugin.

Install the Package

Add the GroupDocs.Merger.LowCode package to your project using the .NET CLI.

dotnet add package GroupDocs.Merger.LowCode
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Copy & Paste the Code

Set up the license, create the JoinDocx plugin, and save the result.

C# F# VB.NET
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using GroupDocs.Merger.Domain.Options;
using GroupDocs.Merger.LowCode;

// Set your license
License.Set("GroupDocs.Merger.LowCode.lic");

// Append the documents to the source DOCX document
var merger = new JoinDocx("source.docx", new[] { "appendix.docx" }, new JoinOptions());

// Save the merged DOCX document
merger.Save("output/merged.docx");
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open GroupDocs.Merger.Domain.Options
open GroupDocs.Merger.LowCode

// Set your license
License.Set("GroupDocs.Merger.LowCode.lic")

// Append the documents to the source DOCX document
let merger = JoinDocx("source.docx", [ "appendix.docx" ], JoinOptions())

// Save the merged DOCX document
merger.Save("output/merged.docx")
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Imports GroupDocs.Merger.Domain.Options
Imports GroupDocs.Merger.LowCode

' Set your license
License.Set("GroupDocs.Merger.LowCode.lic")

' Append the documents to the source DOCX document
Dim merger As New JoinDocx("source.docx", {"appendix.docx"}, New JoinOptions())

' Save the merged DOCX document
merger.Save("output/merged.docx")

Run Your Application

Run your app—the merged DOCX document is saved to the output folder.

About the Document Merger Plugins

Built on our enterprise-grade GroupDocs.Merger SDK, these document merger plugins merge, split, and remove pages in PDF, Word (DOCX), and PowerPoint (PPTX) documents. This cross-platform package runs on Windows, macOS, and Linux under .NET 6+. It offers a lightweight footprint for server or desktop apps. At just $99 per plugin, you get a fixed-price, single-purpose tool (e.g., Merge PDF) that minimizes setup and licensing complexity—perfect for developers who need a simple, focused solution.
Learn more
About Document Merger Plugins

Ready to Get Started?

One-time $99 license per plugin—perpetual, royalty-free, no subscriptions or hidden fees.

Developer Resources

Access essential documentation, API references, code samples, and support options to master our Document Merger Plugins.

Documentation
API Reference
Code Samples
Knowledge Base
Community Forum

Common Questions and Concerns

Quick answers to frequently asked questions about licensing, trials, downloads, and more.

  • Can I evaluate GroupDocs products before buying?
    Yes! You can download and try any merger plugin in evaluation mode—trial limitations apply (e.g., evaluation messages and a three-page limit). For full‑feature testing without restrictions, request a free temporary license before purchasing.
  • Do you offer DOCX merging demos?
    We don’t provide live demos, but you can explore our functionality via the DOCX Merger App, powered by our document merger SDK.
  • Where can I download the package with merger plugins?
    You can download or install the GroupDocs.Merger.LowCode package via NuGet.
  • How does licensing work for developers?
    Licenses are issued per developer, not per user or machine, so your team can change without requiring license updates.
  • What does the $99 license include?
    A one‑time $99 purchase grants a perpetual developer license for a single plugin of our Document Merger Plugins, such as Merge DOCX. Each plugin is licensed separately. There are no subscriptions or hidden fees.
  • Does the plugin work with other document formats?
    Each plugin works with one format: JoinDocx accepts DOCX documents only. To merge, split, or remove pages in other formats, or to combine documents of different formats, use the full GroupDocs.Merger for .NET SDK.

Other Merger Plugins

Check our other plugins provided by the GroupDocs.Merger.LowCode package