C# Get PDF Page Count

How Do You Get PDF Page Count Quickly?

Here is how to get the page count from a PDF file using IronPDF:

using IronPdf;

// Load an existing PDF document
PdfDocument pdf = PdfDocument.FromFile("MultiPageDocument.pdf");

// Get the page count
int pageCount = pdf.PageCount;

// Display the result
Console.WriteLine($"The PDF has {pageCount} pages");

using IronPdf;

// Load an existing PDF document
PdfDocument pdf = PdfDocument.FromFile("MultiPageDocument.pdf");

// Get the page count
int pageCount = pdf.PageCount;

// Display the result
Console.WriteLine($"The PDF has {pageCount} pages");

This code demonstrates the core functionality: load a PDF and read its page count through the PageCount property. The method returns an integer representing the number of pages in the document. You can add this snippet to any C# project -- whether it is a Windows application, a web service, or an Azure Function.

For advanced scenarios, you might want to combine page counting with other PDF operations -- for example, extracting text from specific pages, adding watermarks based on page count, or splitting PDFs at certain intervals.

How Do You Set Up IronPDF in Your Project?

Before you can start counting PDF pages, install IronPDF via NuGet using either of the following commands:

Install-Package IronPdf

Install-Package IronPdf

dotnet add package IronPdf

dotnet add package IronPdf

You can also install through Visual Studio by right-clicking References in Solution Explorer, selecting "Manage NuGet Packages", and searching for "IronPdf".

Once installed, you are ready to work with PDF files. IronPDF supports .NET Framework 4.6.2+ and .NET 5 through .NET 10, providing broad compatibility for your applications. The library works on Windows, Linux, and macOS platforms. For detailed setup instructions, check the IronPDF installation guide.

How Do You Work with Different PDF Sources?

using IronPdf;
using System.IO;

string filePath = @"C:\Documents\invoice.pdf";

// Check if file exists before opening
if (File.Exists(filePath))
{
    using PdfDocument document = PdfDocument.FromFile(filePath);

    int numberOfPages = document.PageCount;
    Console.WriteLine($"Document pages: {numberOfPages}");
}

using IronPdf;
using System.IO;

string filePath = @"C:\Documents\invoice.pdf";

// Check if file exists before opening
if (File.Exists(filePath))
{
    using PdfDocument document = PdfDocument.FromFile(filePath);

    int numberOfPages = document.PageCount;
    Console.WriteLine($"Document pages: {numberOfPages}");
}

using IronPdf;

// Download and open PDF from URL
using PdfDocument reader = PdfDocument.FromUrl("https://ironpdf.com/assets/downloads/ironpdf-brochure.pdf");

int pages = reader.PageCount;
Console.WriteLine($"Web PDF contains {pages} pages");

using IronPdf;

// Download and open PDF from URL
using PdfDocument reader = PdfDocument.FromUrl("https://ironpdf.com/assets/downloads/ironpdf-brochure.pdf");

int pages = reader.PageCount;
Console.WriteLine($"Web PDF contains {pages} pages");

How Do You Batch Process Multiple PDF Files?

When dealing with multiple PDF files, you can efficiently process them in a loop. This approach is familiar to any developer who works with the .NET file system APIs:

using IronPdf;
using System.IO;

string[] pdfFiles = Directory.GetFiles(@"C:\PDFs", "*.pdf");

foreach (string file in pdfFiles)
{
    try
    {
        using PdfDocument pdf = PdfDocument.FromFile(file);

        int count = pdf.PageCount;
        string fileName = Path.GetFileName(file);

        Console.WriteLine($"{fileName}: {count} pages");
    }
    catch (Exception ex)
    {
        // Continue processing other files if one fails
        Console.WriteLine($"Error processing {file}: {ex.Message}");
    }
}

using IronPdf;
using System.IO;

string[] pdfFiles = Directory.GetFiles(@"C:\PDFs", "*.pdf");

foreach (string file in pdfFiles)
{
    try
    {
        using PdfDocument pdf = PdfDocument.FromFile(file);

        int count = pdf.PageCount;
        string fileName = Path.GetFileName(file);

        Console.WriteLine($"{fileName}: {count} pages");
    }
    catch (Exception ex)
    {
        // Continue processing other files if one fails
        Console.WriteLine($"Error processing {file}: {ex.Message}");
    }
}

This code iterates through all PDF files in a directory and outputs the page count for each. The using declaration ensures proper resource cleanup, preventing memory leaks during long batch runs. For high-performance scenarios, consider using async operations to handle multiple files simultaneously, which can cut processing time significantly for large collections.

How Does IronPDF Compare to Other PDF Libraries?

Choosing the right library for PDF page counting in .NET depends on your project's requirements. The following table compares the most common options:

IronPDF's single-property API (PageCount) minimizes boilerplate and integrates with a broader set of PDF manipulation features -- merging, stamping, form editing, and digital signing -- all from the same library. According to Microsoft's .NET System.IO documentation, .NET's native file APIs require you to add a separate PDF parser on top, making a dedicated library the practical choice for production systems.

What Are the Real-World Applications?

The ability to quickly obtain page counts enables numerous practical applications:

• Document Management: Organize files by size for content management systems
• Print Cost Calculation: Estimate costs using print functionality
• Upload Validation: Enforce page limits in web applications
• Report Generation: Include document statistics in summary reports
• Quality Control: Verify page requirements for PDF/A compliance

Consider integrating page counting with other IronPDF features like OCR text extraction or digital signature verification to build complete, end-to-end document workflows. The page count becomes a gating check that runs before heavier processing steps, which saves CPU cycles and storage on documents that do not meet your business rules.

What Performance Factors Should You Consider?

IronPDF excels at page count retrieval because it reads PDF metadata rather than parsing entire document content. This ensures fast response times even with large files. The library uses efficient memory management, making it suitable for production environments where throughput matters.

When processing numerous PDF files, follow these best practices:

• Use using declarations for automatic resource disposal
• Process files in batches to control memory pressure
• Implement error handling for corrupted or malformed files
• Close documents after reading to free resources promptly
• Consider memory stream operations for in-memory processing
• Use Docker containers for horizontal scaling

The simplicity of IronPDF's API means less implementation time and fewer moving parts to debug. For detailed performance guidance, check the IronPDF performance assistance guide. You can also review the NuGet Gallery listing for IronPdf to see version history and download statistics that reflect real-world adoption.

Purchase a license to unlock IronPDF's full capabilities for enterprise applications.

What Common Issues Should You Watch For?

What Are the Key Takeaways?

IronPDF simplifies getting PDF page counts in C#. With its straightforward API, you can extract page information from local files, URLs, and encrypted documents with minimal code. The library's efficiency and reliability make it a practical choice for both quick scripts and complex enterprise systems.

Whether you are building a document management system or validating PDF uploads, IronPDF provides the tools to get the job done cleanly. The result is less boilerplate, faster development cycles, and more reliable applications.

The library integrates with modern .NET applications, supporting Blazor, MAUI, and ASP.NET Core. Its cross-platform compatibility ensures your page counting functionality works consistently across environments.

Start with a free trial and experience what makes IronPDF the preferred choice for .NET developers. Post your questions in the comments or contact support for hands-on assistance.