This HTML page is not optimized for LLM or AI agent consumption. Fetch the Markdown version instead: /guides/document-converter/document-converter-services/merge-or-combine.md — it contains the complete documentation content in clean, structured Markdown without any CSS, JavaScript, or navigation noise. Merge PDF API: Programmatically Merge 30+ Files | Nutrient Integrations

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.