PdfImageCompression enumeration

PdfImageCompression enumeration

Specifies the type of compression applied to images in the PDF file.

Members

Name	Description
Auto	Automatically selects the most appropriate compression for each image.
Jpeg	Jpeg compression. Does not support transparency.

Examples

Shows how to specify a compression type for all images in a document that we are converting to PDF.

let doc = new aw.Document();
let builder = new aw.DocumentBuilder(doc);

builder.writeln("Jpeg image:");
builder.insertImage(base.imageDir + "Logo.jpg");
builder.insertParagraph();
builder.writeln("Png image:");
builder.insertImage(base.imageDir + "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.
let pdfSaveOptions = new aw.Saving.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.imageCompression = pdfImageCompression;
// Set the "JpegQuality" property to "10" to strengthen compression at the cost of image quality.
pdfSaveOptions.jpegQuality = 10;

doc.save(base.artifactsDir + "PdfSaveOptions.imageCompression.pdf", pdfSaveOptions);

See Also

• module Aspose.Words.Saving