Compression

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Compression


 

PRO SDK Icon Compression

 


 

The Compression properties determine the compression format used for text and images. Please note that all properties are case-sensitive:

 

 

NAME

 

 

VALUES

 

DEFINITION

Graphics

 

Boolean Value

 

 

Specifies PDF document compression. If this value is true then compression methods for different image types are defined in the Color, Indexed and Mono subsections.

 

Default value: True

 

Text

Boolean Value

 

If this value is true then text-based content of PDF pages are compressed in order to reduce the resultant file size.

 

 

Color

 

These properties specify the compression for True color images:

 

 

NAME

 

 

VALUES

 

DEFINITION

 

Enabled

 

 

Boolean Value

 

 

Default value: True

 

Method

 

0 (Auto)

1 (JPEG)

2 (ZIP)

3 (JPEGZIP)

4 (J2K)

5 (J2KZIP)

 

 

 

Specifies the compression method used for the compression of True color images.

 

Please that that if the PDF/A format is being used then the compression formats J2K and J2KZIP cannot be used.

 

Default value: 0 (Auto)

 

 

JPEGQuality

 

1-100

 

Specifies the image quality when JPEG compression is used (both JPEG and JPEGZIP). Please note that increasing quality will increase image definition but result in a larger compressed stream, resulting in a larger file.

 

Default value: 75

 

 

Indexed

 

These properties specify the compression for indexed images:

 

 

NAME

 

 

VALUES

 

DEFINITION

 

Enabled

 

 

Boolean Value

 

 

If this property is true then indexed images will be compressed in the manner specified in the Method section. Otherwise they will be stored in PDF and without compression.

 

Default value: True

 

Method

 

0 (Auto)

1 (Packbits)

2 (ZIP)

3 (LZW)

 

Defines the compression method to be used to compress images with palette.

Please note that LZW compression cannot be used with the PDF/A output specification.

 

Default value: 0 (Auto)

 

 

 

Mono

 

These properties specify the compression for monochrome/black & white images:

 

 

NAME

 

 

VALUES

 

DEFINITION

 

Enabled

 

 

Boolean Value

 

 

Default value: True

 

Method

 

0 (Auto)

1 (ZIP)

2 (CCITT3)

3 (CCITT4)

4 (RLE)

5 (JBIG2)

 

 

Defines the compression method to be used to compress monochrome/black 7 white images.

 

Please note that JBIG2 compression cannot be used with the PDF/A output specification.

 

Default value: 0 (Auto)

 

 

 

JBIG2Method

 

 

0 (Standard)

1 (CropBorders)

2 (Symbols)

 

 

Specifies preprocessing method of images compressed using JBIG2 compression.

 

Default value: 0 (Standard)