How to compress PDF in JasperReports

Question

How do I apply the `IS_COMPRESSED = true` property to a Jasper PDF report? This is what I have but when I create a PDF report it is the same size as it's clone without compression enabled: ``` File pdfFile = new File (pdfDirectory.getAbsolutePath() + File.separator + reportName + ".pdf"); File jrPrintFile = new File(jrprintFileLocation.getAbsolutePath() + File.separator + templateName + ".jrprint"); JasperPrint jasperPrint = (JasperPrint)JRLoader.loadObject(jrPrintFile); JRPdfExporter jrPdfExporter = new JRPdfExporter(); jrPdfExporter.setParameter(JRPdfExporterParameter.IS_COMPRESSED, true); jrPdfExporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint); jrPdfExporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, pdfFile.getAbsolutePath()); jrPdfExporter.exportReport(); ```

Accepted Answer

This may be an old question, but I spent some time looking how to compress PDF files and I want to share the answer...

The setParameter method alternative is deprecated, and in order to do the same, the documentation indicates that you should use an implementation of PdfExporterConfiguration. A simple one called SimplePdfExporterConfiguration is provided and should be used like this:

```
SimplePdfExporterConfiguration configuration = new SimplePdfExporterConfiguration();
configuration.setCompressed(true);
```

A complete example of a PDF generation using an XML as source:

```
Document document = JRXmlUtils.parse(JRLoader.getLocationInputStream(PATH_XML));

//report parameters
Map params = new HashMap();
//document as a parameter
params.put(JRXPathQueryExecuterFactory.PARAMETER_XML_DATA_DOCUMENT, document);
//other parameters needed for the report generation
params.put("parameterName", parameterValue);

JasperPrint jasperPrint = JasperFillManager.fillReport(PATH_JASPER, params);

JRPdfExporter exporter = new JRPdfExporter();
exporter.setExporterInput(new SimpleExporterInput(jasperPrint));
exporter.setExporterOutput(new SimpleOutputStreamExporterOutput(PATH_PDF));

//configuration
SimplePdfExporterConfiguration configuration = new SimplePdfExporterConfiguration();
configuration.setCompressed(true);

//set the configuration
exporter.setConfiguration(configuration);
//finally exporting the PDF
exporter.exportReport();
```

I managed to compress files from 4 mb to 1.9 mb, if someone knows a better alternative or better way please comment this answer.

How to compress PDF in JasperReports

Solution

Problem