Convert PDF to PDF/A with .NET REST API.

We realize that PDF documents are an integral part of our daily lives, because they serve as a reliable means of exchanging information and preserving important data. However, when document archiving requirements become more stringent, a long-term preservation and compliance of PDF files becomes crucial. This is where the need for PDF to PDF/A conversion arises. So, leverage the power of Aspose.PDF Cloud SDK for .NET and seamlessly convert your PDF documents to PDF/A and unlock the benefits of robust preservation and compliance with archival standards.

REST API for PDF Processing

With Aspose.PDF Cloud SDK for .NET, the process of converting PDF to PDF/A is streamlined and becomes quite efficient. This powerful API provides a seamless integration with your .NET applications, allowing you to effortlessly convert the PDF files to the PDF/A format. Therefore, take a benefit of this feature-rich SDK, and ensure that your documents comply with archival standards and can be preserved for a long term.

So, in order to begin using the SDK, simply search Aspose.PDF-Cloud in NuGet packages manager inside Visual Studio IDE and click the Add Package button. You also need to obtain your client credentials from cloud dashboard. In case you do not have an existing account, simply create a free account by following the instructions specified over quick start.

Convert PDF to PDF/A using C# .NET

Please try using the following code snippet, which provides a quick and convenient approach to develop an online PDF to PDF/A converter.

Specified below are quick details regarding above stated code snippet.

PdfApi pdfApi = new PdfApi(clientSecret, clientID);

Firstly, create an object of PdfApi class while passing client credentials as input arguments.

var response = pdfApi.GetPdfAInStorageToPdf(inputFile, dontOptimize: true);

The first argument in above method is the name of input PDF file available in cloud storage and the second argument states that resultant PDF/A shall not be optimized else there are chances of file corruption.

saveToDisk(response, "/Users/nayyer/Downloads/Converted-pdfa.pdf");

This custom method saves the resultant PDF/A on local drive.

The input PDF document used in the above example can be downloaded from Binder1.pdf.

PDF to PDF/A Conversion using cURL Commands

Another amazing option is by utilizing the cURL commands in combination with Aspose.PDF Cloud. With this approach, you can efficiently convert your PDF files to the PDF/A format. Please note that this powerful combination allows a flexible and command-line based approach for conversion. Whether you need to convert a single PDF or process a large batch of files, this approach offers the versatility and scalability required for your conversion needs.

Now, with this approach, the first step is to generate a JWT access token, so please execute the following command:

curl -v "https://api.aspose.cloud/connect/token" \
 -X POST \
 -d "grant_type=client_credentials&client_id=bb959721-5780-4be6-be35-ff5c3a6aa4a2&client_secret=4d84d5f6584160cbd91dba1fe145db14" \
 -H "Content-Type: application/x-www-form-urlencoded" \
 -H "Accept: application/json"

Once the JWT token has been generated, please execute the following command to PDF to PDF/A conversion. The resultant file is then saved on a local drive using -o argument.

curl -v "https://api.aspose.cloud/v3.0/pdf/create/pdfa?srcPath={myInputFile}&dontOptimize=true" 
\ -X GET \
-H  "accept: multipart/form-data" \
-H  "authorization: Bearer {accessToken}" \
-o "Converted.pdf"

Replace myInputFile with the name of an input PDF document already available in cloud storage, and accessToken with JWT access token generated above.


In conclusion, the conversion of PDF to PDF/A format is a critical process for ensuring long-term preservation and compliance of digital documents. With the powerful capabilities of Aspose.PDF Cloud SDK for .NET and cURL commands, this task becomes seamless and efficient. We have also learned that Aspose.PDF Cloud proves to be a reliable and feature-rich solution for converting PDF files to the PDF/A format. Furthermore, its other abilities to maintain document integrity, extract text, images, and metadata etc., makes it an indispensable tool for any organization.

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