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How to Integrate ComPDF C# PDF API Libraries

By authorSierra Nakamura | Wed. 09 Jul. 2025

Embrace the capabilities of ComPDF's C# PDF API Integration and elevate your C# applications to new heights. This integration not only simplifies the incorporation of PDF functionalities but also brings a host of benefits that can transform your digital solutions. This article will guide you to integrate the Open API libraries in C-sharp. More integration guides for Open API libraries can be obtained on the documentation page.

 

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How to Integrate ComPDF C# PDF API Libraries

 

Requirements of C# PDF API Integration

  • Programming Environment: .NET Framework 4.6.1 and higher, and .Net core 1.0 and higher.
  • Dependencies: NuGet.

 

Step 1. Get a License

  • Register Open API account.
  • Go to the API Keys section for Obtain the Project ID (Project Name), Public Key, and Secret Key.

  

Step 2. Authentication the License

The Open API utilizes JSON Web Tokens for secure authentication. Utilize the Public Key and Secret Key, which you acquired from the previous step to authorize the license. For a comprehensive understanding of the Authentication process, please visit the Authentication Documentation.

CPDFClient client = new CPDFClient(<publicKey>, <secretKey>);

 

Step 3. C Sharp PDF API Library Integration

Here are three ways to get the Open API libraries:

Install-Package compdfkit-api-dotnet
  • Add "compdfkit-api-dotnet": "1.3.2" to your `.csproj file` and then run it.

 

Step 4. Request Workflow

With your ComPDF account set up, license authorized, and the C# PDF library installed, you're ready to begin leveraging the powerful PDF processing capabilities. There are all the steps to request a ComPDF PDF API below:

 

  • Create a task and get the task ID
  • Upload the PDF file that you want to be processed
  • Execute the task. Open API could provide the APIs for all kinds of PDF processing
  • Get the Processed result file. This means that a whole API request is completed

  

When you start to make an API request to deal with your files, make sure to call the corresponding API. All supported PDF APIs and their detailed guides are given on the Open API documentation page.

 

Conclusion

From this post you can learn how to integrate ComPDF PDF API libraries in C sharp. If you want to see how to integrate a specific PDF functionality or how to integrate ComPDF PDF API libraries in other programming languages, click to our API Libraries page.

 

If questions arise or additional support is needed, ComPDF technical team is just a click away.

 

Windows   Web   Android   iOS   Mac   Server   React Native   Flutter   Electron
30-day Free