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The Syncfusion Essential PDF is a .NET PDF library that allows you to transform regular PDF documents into PDF/A, a specialized ISO-standardized format designed for long-term archiving and preservation of electronic documents. This conversion ensures that the resulting PDF/A files adhere to specific standards, such as embedding fonts and preserving document structure, to guarantee their reliability over time.

The PDF to PDF/A conversion feature works seamlessly on various platforms: WinForms, WPF, Blazor, ASP.NET MVC, ASP.NET Core, UWP, Xamarin with Windows, Linux, and MacOS.

How to Convert PDF to PDF/A in C#

  1. Install the Syncfusion.Pdf.Imaging.Net.Core NuGet package to your project.
  2. Create FileStream objects to represent the input PDF files.
  3. Create a PdfLoadedDocument object by passing the FileStream object.
  4. Convert the loaded document to PDF/A document.
  5. Save the PdfDocument object to the FileStream object.

Here is an example of PDF to PDF/A conversion in C# using the Syncfusion PDF library. You can convert PDF to PDF/A with just a few lines of code. 

//Load an existing PDF document 
    FileStream docStream = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read); 

    PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream); 

    //Convert the loaded document to PDF/A document 

    //Save the document into a filestream object. 
    using (FileStream outputFileStream = new FileStream("Output.pdf", FileMode.Create, FileAccess.Write)) 
        //Save the generated PDF document to the output file stream 

    //Close the document. 


Greatness—it’s one thing to say you have it, but it means more when others recognize it. Syncfusion is proud to hold the following industry awards.

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