3 Ways To Add Stamp In PDF Using C#
The Syncfusion® .NET PDF Library provides powerful APIs for adding and managing stamps in PDF documents programmatically. This collection of samples showcases three different methods for applying stamps, along with options to customize, flatten, or remove them, enabling developers to build approval, branding, and workflow automation features seamlessly.
| Sample name | Description |
|---|---|
| Create stamp with standard icon | Demonstrates how to add predefined standard icon stamps such as Approved, Draft, or Confidential to a PDF document for quick workflow marking. |
| Create stamp with dynamic content | Shows how to generate stamps with dynamic text or metadata, enabling automated insertion of details like timestamps, usernames, or custom messages. |
| Create stamp with image | Explains how to insert image-based stamps, such as company logos or branded graphics, to visually reinforce ownership and authenticity. |
| Customize stamp | Illustrates how to adjust stamp properties including size, color, rotation, and position to match branding or document layout requirements. |
| Remove or flatten stamps in PDF | Demonstrates how to programmatically remove stamps or flatten them into the PDF content, ensuring permanent embedding or clean removal. |
How to run the examples
- Download this project to a location in your disk.
- Open the solution file using Visual Studio.
- Rebuild the solution to install the required NuGet package.
- Run the application.
Resources
- Product page: Syncfusion® PDF Framework
- Documentation page: Syncfusion® .NET PDF library
- Online demo: Syncfusion® .NET PDF library - Online demos
- Blog: Syncfusion® .NET PDF library - Blog
- Knowledge Base: Syncfusion® .NET PDF library - Knowledge Base
- EBooks: Syncfusion® .NET PDF library - EBooks
- FAQ: Syncfusion® .NET PDF library - FAQ
Support and feedback
- For any other queries, reach our Syncfusion® support team or post the queries through the community forums.
- Request new feature through Syncfusion® feedback portal.
License
This is a commercial product and requires a paid license for possession or use. Syncfusion’s licensed software, including this component, is subject to the terms and conditions of Syncfusion's EULA. You can purchase a licnense here or start a free 30-day trial here.
About Syncfusion®
Founded in 2001 and headquartered in Research Triangle Park, N.C., Syncfusion® has more than 26,000+ customers and more than 1 million users, including large financial institutions, Fortune 500 companies, and global IT consultancies.
Today, we provide 1600+ components and frameworks for web (Blazor, ASP.NET Core, ASP.NET MVC, ASP.NET WebForms, JavaScript, Angular, React, Vue, and Flutter), mobile (Xamarin, Flutter, UWP, and JavaScript), and desktop development (WinForms, WPF, WinUI, Flutter and UWP). We provide ready-to-deploy enterprise software for dashboards, reports, data integration, and big data processing. Many customers have saved millions in licensing fees by deploying our software.
