Resize PDF via Java

Do you need to resize PDF? Programmatic modification of PDF documents is an essential part of modern digital workflows. With Java 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 Java developers.

This Java 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 Java. It is a standalone solution for processing PDF documents in Java that does not require the installation of any third-party software.

In order to resize PDF file, we’ll use Aspose.PDF for Java API which is a feature-rich, powerful, and easy-to-use document manipulation API for the Java platform. You can download its latest version directly from Maven and install it within your Maven-based project by adding the following configurations to the pom.xml.

<repository>
    <id>AsposeJavaAPI</id>
    <name>Aspose Java AP</name>
    <url>https://releases.aspose.com/java/repo/</url>
</repository>

<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-pdf</artifactId>
<version>version of aspose-pdf API</version>
</dependency>

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

    
    public static void ChangePDFPageSize() {
        
        // Open first document
        Document pdfDocument = new Document(_dataDir + "sample.pdf");
                
        // Get page collection
        PageCollection pageCollection = pdfDocument.getPages();

        // Get particular page
        Page pdfPage = pageCollection.get_Item(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);
    }