---
title: ".NET Core Watermark Server: Secure On-Premises Watermarking | Nutrient"
canonical_url: "https://www.nutrient.io/guides/document-converter/document-converter-services/watermark/dotnet-core-server/"
md_url: "https://www.nutrient.io/guides/document-converter/document-converter-services/watermark/dotnet-core-server.md"
last_updated: "2026-05-30T02:20:01.201Z"
description: ".NET Core Watermark Server: Secure On-Premises Watermarking | guide for Nutrient Document Converter SDK with detailed instructions and code examples."
---

# .NET Core Watermark Server

### Online

[Online](https://www.nutrient.io/guides/document-converter/document-converter-services/watermark/dotnet-core.md)

### On-Premises

[On-Premises](https://www.nutrient.io/guides/document-converter/document-converter-services/watermark/dotnet-core-server.md)

Add text and image watermarks to PDF or Office files on your self-hosted server (SOAP API). Dynamically add dates, times, and pages numbers to the header and footer of your documents. Insert lines, rectangles, ellipses, barcodes, RTF files, images, and PDFs into your document. Apply multiple watermarks to the same page or to a range of pages (odd, even, portrait, or landscape). Start your free trial or sign up to download and integrate watermarking capabilities into your application.

## Code Samples: Adding Watermarks Using.NET Core

Explore our code samples to learn how you can add watermarks to documents in your application or workflow. Or [contact us](https://www.nutrient.io/contact-sales) to explore other solutions!

1. [Apply Rich Watermarks to an MS Office Document Using.NET Core](https://github.com/Muhimbi/PDF-Converter-Services/blob/master/Microsoft%20.NET%20Core/MS%20Office%20Watermarking)

2. [Apply Rich Watermarks to a PDF Using.NET Core](https://github.com/Muhimbi/PDF-Converter-Services/blob/master/Microsoft%20.NET%20Core/Watermarking)

---

## Related pages

- [C# Watermark Server](/guides/document-converter/document-converter-services/watermark/csharp-server.md)
- [Add watermarks to PDFs and Office files](/guides/document-converter/document-converter-services/watermark/dotnet-core.md)
- [Add watermarks to your documents](/guides/document-converter/document-converter-services/watermark/java.md)
- [Add watermarks to documents with C#](/guides/document-converter/document-converter-services/watermark/csharp.md)
- [Java Watermark Server](/guides/document-converter/document-converter-services/watermark/java-server.md)
- [Add watermarks to your documents](/guides/document-converter/document-converter-services/watermark/javascript.md)
- [Add watermarks to PDFs using PHP API](/guides/document-converter/document-converter-services/watermark/php.md)
- [PDF Watermark API](/guides/document-converter/document-converter-services/watermark.md)