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Compression
ScanSoft PDF Create! includes six predefined conversion controls which specify
settings for compressing text and graphics (line art) as well as specific compression
settings for color images, grayscale images, and monochrome (black and white)
images. Compression helps to make your PDF files smaller.
You can select the appropriate control from the drop-down list:
Medium Quality (level 50) (default)
High Quality (level 75)
Low Quality (level 25)
LossLess (level 100)
Image Place Holder (level 5)
No Image (level 0)
Set level 0 to have pictures in the source document dropped from the PDF. Select
level 5 to have very low quality images, serving only as place-holders.
You can edit the settings for an existing control, add a new control, or delete an
existing control in the Compression Controls dialog box.
To display the Compression Control dialog box:
1. Click the
Advanced
button.
2. Highlight a conversion control in the list of conversion controls and view or edit
the settings as needed.
Modify the Auto-setting
Move the slider from a pre-set value to a value of your choice. This affects the
compression for texts, line art and images in your documents.
Use Custom Settings
Select a compression method for any color, grayscale, or monochrome images in
your document.
For color and grayscale images, you can choose from a range of qualities for
JPEG
and
ZIP
formats, from High to Low.
Which method is best depends on the kind of images in your particular document.
Some compression techniques do not lose any detail in the original: these
methods are called “lossless.” Lossless methods do not save as much disk space
as the other kind of compression, which is called “lossy.” Files compressed using
lossy methods can be much smaller than files using lossless methods.
For example, JPEG is best for images requiring a smooth transition from one
color or shade to another while ZIP works well for sharper changes. For best
results, you might want to try different compression settings for different
documents.
