Resize PDF via C#

Do you need to resize PDF? Programmatic modification of PDF documents is an essential part of modern digital workflows. .NET libraries like Aspose.PDF – are stand-alone solutions that don’t rely on other software and are ready for commercial use. They cover all possible needs of professional C# developers.

This C# library enables developers to resize PDF documents quickly and efficiently through programming. This library shows you how easily to update or change the page dimensions in an existing PDF file programmatically with C#. It is a standalone solution for processing PDF documents in C# that does not require the installation of any third-party software.

In order to resize PDF page, we’ll use Aspose.PDF for .NET API which is a feature-rich, powerful and easy-to-use document manipulation API for .NET platform. Open NuGet package manager, search for Aspose.PDF and install. You may also use the following command from the Package Manager Console.

PM > Install-Package Aspose.PDF

If you want to resize PDF files for your tasks, this solution can help. With this powerful Aspose.PDF .NET library, you can update or change the page dimensions (size) of an existing files. This professional tool uses C# to resize PDF effectively. The following example demonstrates how to change size of PDF document in C#:

    // Open document
    Document pdfDocument = new Document(dataDir + "UpdateDimensions.pdf");

    // Get page collection
    PageCollection pageCollection = pdfDocument.Pages;

    // Get particular page
    Page pdfPage = pageCollection[1];

    // Set the page size as A4 (11.7 x 8.3 in) and in Aspose.Pdf, 1 inch = 72 points
    // So A4 dimensions in points will be (842.4, 597.6)
    pdfPage.SetPageSize(597.6, 842.4);

    dataDir = dataDir + "UpdateDimensions_out.pdf";
    // Save the updated document
    pdfDocument.Save(dataDir);