Convert to grayscale
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To speed up the printing of a PDF file and reduce its size, you can convert it from RGB color space to grayscale.
To convert a PDF file to grayscale, set the setConvertToGrayScale() method to true
.
The following code snippet shows how to convert a PDF file to grayscale:
try (Viewer viewer = new Viewer("sample.docx")) {
PdfViewOptions viewOptions = new PdfViewOptions();
viewOptions.setPdfOptimizationOptions(new PdfOptimizationOptions());
viewOptions.getPdfOptimizationOptions().setConvertToGrayScale(true);
viewer.view(viewOptions);
}
The following image demonstrates the result:
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