---
title: "Merge PDF API: Programmatically Merge 30+ Files | Nutrient Integrations"
canonical_url: "https://www.nutrient.io/guides/document-converter/document-converter-services/merge-or-combine/"
md_url: "https://www.nutrient.io/guides/document-converter/document-converter-services/merge-or-combine.md"
last_updated: "2026-06-19T14:38:17.527Z"
description: "Merge over 30 file types into a single PDF using our REST API or self-hosted library. Enhance your workflows with watermarks, passwords, and bookmarks."
---

# Merge PDF API

Merge multiple PDF documents into a single file using our REST API or by deploying our PDF merging library in your self-hosted server. Convert and merge 30+ file types like HTML, CAD, MS Office, and image files to PDF. Integrate additional capabilities in your workflows when merging documents, like adding a watermark, password, or bookmark. Quickly integrate with code samples available in C#, Java,.NET Core, PHP, and JavaScript.

- [C#](/guides/document-converter/document-converter-services/merge-or-combine/csharp.md)

- [Java](/guides/document-converter/document-converter-services/merge-or-combine/java.md)

- [.NET Core](/guides/document-converter/document-converter-services/merge-or-combine/dotnet-core.md)

- [PHP](/guides/document-converter/document-converter-services/merge-or-combine/php.md)

- [JavaScript](/guides/document-converter/document-converter-services/merge-or-combine/javascript.md)

---

## Related pages

- [Merge PDFs Using .NET Core](/guides/document-converter/document-converter-services/merge-or-combine/dotnet-core.md)
- [Java Merge PDF API](/guides/document-converter/document-converter-services/merge-or-combine/java.md)
- [Merge PDFs using C#](/guides/document-converter/document-converter-services/merge-or-combine/csharp.md)
- [Merge files with API](/guides/document-converter/document-converter-services/merge-or-combine/code-sample-merge-files.md)
- [Merge PDFs Using JavaScript](/guides/document-converter/document-converter-services/merge-or-combine/javascript.md)
- [Merge PDF Using PHP](/guides/document-converter/document-converter-services/merge-or-combine/php.md)