Reduce image quality
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If the output PDF file contains images, you can reduce its size using image compression.
To enable image compression, set the setCompressImages() method to true
. The GroupDocs.Viewer compresses all images in the file.
The setImageQuality() method determines the compression ratio. It is a quality value in percent. 100% means original quality.
The following code snippet shows how to compress images in the file:
try (Viewer viewer = new Viewer("sample.docx")) {
PdfViewOptions viewOptions = new PdfViewOptions();
viewOptions.setPdfOptimizationOptions(new PdfOptimizationOptions());
viewOptions.getPdfOptimizationOptions().setCompressImages(true);
viewOptions.getPdfOptimizationOptions().setImageQuality(50);
viewer.view(viewOptions);
}
The following image demonstrates the result:
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