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ImageRecompressionOptions Class

The parameters for image recompression

Inheritance Hierarchy
SystemObject
  PdfTools.InternalNativeBase
    PdfTools.InternalNativeObject
      PdfTools.OptimizationImageRecompressionOptions

Namespace: PdfTools.Optimization
Assembly: PdfTools (in PdfTools.dll) Version: 1.0.0
Syntax
C#
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public class ImageRecompressionOptions : NativeObject

The ImageRecompressionOptions type exposes the following members.

Properties
 NameDescription
Public propertyAlgorithmSelection

The strategy for image recompression

For each image to be recompressed, a specific choice of compression algorithms are tried. The selection of algorithms depends on this strategy, the type of the optimizer profile (e.g. Web), the color space of the image, and CompressionQuality. The image is recompressed using the algorithm resulting in the smallest output file.

Refer to CompressionAlgorithmSelection for more information on strategies.

Default:

Public propertyCompressionQuality

The compression quality for lossy image compression algorithms

This property specifies the compression quality for the JPEG and JPEG2000 image compression algorithms. Valid values are between 0 (lowest quality) and 1 (highest quality).

Although the JBIG2 algorithm for bi-tonal images also allows lossy compression, it is not influenced by this property. The JBIG2 compression quality is fixed at 1 (lossless).

Default:

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Methods
 NameDescription
Public methodEquals
(Inherited from NativeObject)
Public methodGetHashCode
(Inherited from NativeObject)
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See Also