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Flattening PDFs with C# REST API

This short guide explains the process of flattening PDFs with C# REST API. You will learn to flatten PDF online with C# REST Interface using a .NET based Cloud SDK for printing or sharing a PDF with restriction on editing data filled in the form fields. It not only enhances the security but also improves compatibility and ensures data integrity for archiving.

Prerequisite

Steps to Flatten PDF Online with C# REST Interface

  1. Create an instance of PdfApi using the provided API credentials
  2. Specify the local PDF file name, the remote storage file name, and the local output file path
  3. Open the local PDF file stream and upload it to the root folder of the cloud storage
  4. Call PutFieldsFlatten on the uploaded file to flatten all form fields in place
  5. Retrieve the processed PDF from cloud storage as a stream
  6. Copy the downloaded PDF stream to a new local file
  7. Catch any exceptions and output related error messages and stack traces

This process starts by setting up the PDF API, choosing your file paths, uploading the PDF, and flattening its form fields in the Cloud. After that, you download the finished file, save it locally, and make sure any errors along the way are clearly reported.

Code to Flatten a PDF Online with C# .NET-based API

This code performs the process of PDF flatten online with C# Low Code API. You may upload multiple PDF files to the Cloud storage and perform the flattening by passing individual file name one-by-one to the PutFieldsFlatten() method for online operations. You may download all or selected output files using the DownloadFile() method in the PdfApi class.

This article has shown how to flatten a PDF with C# Low Code API. To convert a PDF document to an XPS, refer to the article on Convert PDF to XPS using C# REST API.

 

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