Sharing documents across different platforms and devices is made easier with the use of PDF (Portable Document Format) files. However, their considerable file sizes can create difficulties in terms of storage and sharing. In this guide, we will explore how to compress PDF files in Java, providing you with a seamless way to reduce the size of PDFs.
Java Library to Compress PDF
For efficient compression of PDF files, we will use the powerful PDF processing library, Aspose.PDF for Java. This library streamlines the tasks of generating, modifying, and manipulating PDF documents. To integrate the library into your Java application, you can include it as a Maven dependency, as mentioned below. Alternatively, you can download the JAR file.
<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-pdf</artifactId>
<version>23.5</version>
</dependency>
Compress a PDF File in Java
Compressing a PDF file using Aspose.PDF for Java isn’t a complex task. Simply load the PDF, specify the compression settings, and compress the file. The following are the steps to compress a PDF file in Java.
- First, load the PDF using the Document class.
- Then, create an instance of the OptimizationOptions class.
- Enable image compression by setting OptimizationOptions.getImageCompressionOptions().setCompressImages() to true.
- Set the quality of images using the OptimizationOptions.getImageCompressionOptions().setImageQuality() method.
- Compress the PDF using the Document.optimizeResources() method.
- Finally, save the compressed PDF using the Document.Save() method.
The following code sample shows how to compress a PDF file in Java:
Online PDF Compressor
Have a look at our free online PDF compressor, which is based on Aspose.PDF for Java. This free PDF compressor lets you reduce the size of PDF files without downloading any software or creating an account.
Free Java PDF Library
Get a free temporary license and compress PDF files without any evaluation limitations. In addition, visit the documentation to learn more about our Java PDF library.
If you encounter any issues while using our library, please contact us via our forum.
Conclusion
In this article, you have learned how to compress PDF files in Java. The step-by-step guide and code sample have demonstrated how to reduce the size of a PDF file in Java. In addition, we have provided you with a free online PDF compressor that you can use anywhere at any time.