ImageRecompressionOptions Class

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:

• Web profile: Balanced
• Print profile: PreserveQuality
• Archive profile: PreserveQuality
• MinimalFileSize profile: Balanced

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:

• Web profile: 0.8
• Print profile: 0.9
• Archive profile: 0.9
• MinimalFileSize profile: 0.75