Aspose::Words::Saving::PdfImageCompression enum

PdfImageCompression enum

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

enum class PdfImageCompression

Values

Name	Value	Description
Auto	0	Automatically selects the most appropriate compression for each image.
Jpeg	1	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.

auto doc = MakeObject<Document>();
auto builder = MakeObject<DocumentBuilder>(doc);

builder->Writeln(u"Jpeg image:");
builder->InsertImage(ImageDir + u"Logo.jpg");
builder->InsertParagraph();
builder->Writeln(u"Png image:");
builder->InsertImage(ImageDir + u"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.
auto pdfSaveOptions = MakeObject<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->set_ImageCompression(pdfImageCompression);

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

doc->Save(ArtifactsDir + u"PdfSaveOptions.ImageCompression.pdf", pdfSaveOptions);

See Also

• Namespace Aspose::Words::Saving
• Library Aspose.Words for C++