8.5

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Color images group
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Color compression: Select the compression to use for the color images. Flate is a lossless
compression method, so no data is lost in the process. It works well on images with large areas
of single shades or repeating patterns, such as screen shots and simple images created with
paint or drawing programs. JPEG removes image data and may reduce image quality, but may
be suitable for continuous-tone photographs containing more detail than can be reproduced
onscreen or in print. Since JPEG eliminates data, it can achieve much smaller file sizes than
Flate compression. Select Auto to let the application choose the best compression method
automatically. Note that configurations that were created with an earlier version of PlanetPress
Workflow and that included tasks set not to use any compression will by default be set to use the
Flate compression method.
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Color down sampling: Select the down sampling option. down sampling reduces image size by
breaking images down into small areas in which multiple pixels are replaced by single pixels.
The Color resolution you enter in the following box is used to control the down sampling process.
Select None to prevent grayscale down sampling. Select Average to average pixel color in each
sample area and to replace the entire area with a pixel of the average color. Select Subsample to
use a pixel in the center of the sample area and replace the entire area with that pixel value. This
method is significantly faster, but results in images that are less smooth. Select Bicubic to use a
weighted average to determine pixel shades. This method is the slowest but most precise and
results in the smoothest tonal gradations.
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Color resolution: Select the resolution to use for color images. Note that this setting has an
impact on the color down sampling process.
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Security group
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Set document permissions: Select to enter the Permissions password.
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Permissions password: Enter a password in this box only if you want to prevent users
who does not have this password from changing the security options of the generated PDF
files.
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Allow printing: Select to let users print the generated PDF files.
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Allow changing the document: Select to let users edit the generated PDF files.
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Allow content copying: Select to let users copy content from the generated PDF files.
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Allow form filling: Select to let users enter information in the form fields included in the
generated PDF files.
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PDF open password: Enter a password in this box only if you want to prevent users who does