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Count Pages in PDF Without Opening using C# REST API

In this concise tutorial you’ll discover how to count pages in a PDF without opening it using the C# REST API. We’ll guide you through automatically counting pages across multiple PDF files with the C# REST interface by scanning every file in a folder and applying the provided sample code to each document. The approach also lets you filter the returned List object using various page‑level properties for precise results.

Prerequisite

Steps for PDF Page Counter Software with C# REST Interface

  1. Set the PdfApi object using a client ID and the secret to analyze the pages
  2. Read all the bytes of the PDF file and save it in a memory stream
  3. Upload the PDF file to the Cloud storage using the UploadFile() method by setting the name and bytes stream
  4. Call the GetPages() method that returns the DocumentPagesResponse object
  5. Check the status and response list object validity
  6. Display the count of the pages in the list

These steps describe how to develop an online PDF page counter with C# .NET-based API. Load the PDF file into a memory stream and upload to the Cloud storage. Call the GetPages() for the uploaded file and display the count of list items in the response object.

Code for Adobe PDF Page Counter with C# RESTful Service

This example demonstrates how to count PDF pages in a folder with the C# Low‑Code API by iterating through each PDF file individually. By inspecting the properties exposed by the Page class you can tally the specific pages you need. If the API response status isn’t “OK” or the returned list object is null, simply discard that result.

In this guide we demonstrated how to count the pages in a PDF file without ever opening it, using the C# REST API. For a related capability, check out our article on Count words in PDF document with C# REST API.

 

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