Image Compression Tab

Use the options from the Image Compression to set different compression rates for embedded images in documents. Images (especially in color)often increase the size of a document. With the options in the Image Compression tab, you can specify a downsampling algorithm to reduce the size of images.

 

To Select Image Compression Option:

  1. Click the Image Compression tab.

  2. Select the following options:

 

Option

Function

Color image compression

To reduce the size of color images in a document. Choose from the following options:

To Use:

From the Color Image Compression list, select an algorithm.

• 256-color compression: To use a 256-color compression algorithm that computes the most popular of the 256 colors in an image and

replaces all other color pixels with their closest match. This lossless

compression may be slower with images that exceed 256 colors.

• JPEG compression: To use a JPEG compression algorithm that produces excellent results for true-color images. This compression is not recommended for graphics other than real pictures. When this option is selected, a level-selection box appears with quality variances:

- From 1 to 9: Level 1 produces poorer quality images with a large compression ratio.

- Level 9: Produces very good quality images with medium compression ratio.

- The default value (7): Produces compression levels and image quality suitable for most images.

• PNG compression.

 

  1. Click OK.