com.aspose.words

Class PdfImageCompression

  • java.lang.Object
    • com.aspose.words.PdfImageCompression
public class PdfImageCompression 
extends java.lang.Object

Utility class containing constants. Specifies the type of compression applied to images in the PDF file.

Example:

Shows how to specify a compression type for all images in a document that we are converting to PDF.
Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

builder.writeln("Jpeg image:");
builder.insertImage(getImageDir() + "Logo.jpg");
builder.insertParagraph();
builder.writeln("Png image:");
builder.insertImage(getImageDir() + "Transparent background logo.png");

// Create a "PdfSaveOptions" object that we can pass to the document's "Save" method
// to modify how that method converts the document to .PDF.
PdfSaveOptions pdfSaveOptions = new PdfSaveOptions();

// Set the "ImageCompression" property to "PdfImageCompression.Auto" to use the
// "ImageCompression" property to control the quality of the Jpeg images that end up in the output PDF.
// Set the "ImageCompression" property to "PdfImageCompression.Jpeg" to use the
// "ImageCompression" property to control the quality of all images that end up in the output PDF.
pdfSaveOptions.setImageCompression(pdfImageCompression);

// Set the "JpegQuality" property to "10" to strengthen compression at the cost of image quality.
pdfSaveOptions.setJpegQuality(10);

doc.save(getArtifactsDir() + "PdfSaveOptions.ImageCompression.pdf", pdfSaveOptions);

Field Summary
static final intAUTO = 0
Automatically selects the most appropriate compression for each image.
static final intJPEG = 1
Jpeg compression. Does not support transparency.
 

    • Field Detail

      • AUTO = 0

        public static final int AUTO
        Automatically selects the most appropriate compression for each image.
      • JPEG = 1

        public static final int JPEG
        Jpeg compression. Does not support transparency.