Operation Manual

C OREL PDF F USION U SER G UIDE
SETUPS INDEX CONTENTS  118 
PDF DOCUMENT SETUP INDEX CONTENTS  118 
Downsample
Use these options to control whether and how Corel PDF Fusion
reduces the resolution of images in the file input.
Set this to
Don’t downsample when your documents are intended for
high-quality printing.
Average reduces the size by averaging neighboring pixels and produces
good quality results. You cannot average a monochrome image because
Corel PDF Fusion does not “promote” such images to grayscale.
Subsample reduces the resolution of the image by dropping pixels.
Bicubic reduces the resolution by performing bicubic interpolation to
generate new pixel values. This option can generate more pleasing
results though the PDF is slower to generate. Bicubic is not available with
monochrome images.
Compression
The three compression filters are available for dealing with images. The
Zip filter uses a lossless compression technique and normally produces
good compression ratios. It can optionally apply a predictor algorithm
which can further improve the compression for some classes of image.
The JPEG filter uses a lossy algorithm (which irretrievably discards data),
but it produces excellent compression ratios on photographic images.
You can select from three compression levels with
high being the most
lossy and most compressed and
low being the least lossy and least
compressed.
The CCITT filter uses standard fax compression, and is only applicable
to monochrome bitmap images.
Resolution
If you have enabled downsampling, this option lets you specify the target
resolution of the reduced images actually embedded in the PDF file.
Compress text and line art
When selected, Corel PDF Fusion compresses textual information, such
as page descriptions, using ZIP compression.
9.4.4 Font embedding tab (PDF)
The Font embedding tab lets you control how fonts are handled in your PDF files.
NOTE: The Font embedding tab is not available when a PDF/A-1b setup is selected.
Always embed window
Fonts listed in this window are always embedded in the output PDF file.
Use the Add and Remove buttons to manage this list. You should check
the terms of your font license agreement before embedding any fonts.
Named fonts are embedded when they are referenced in the original