Adobe Acrobat XI - Manual (Page 152)

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Creating PDFs
Last updated 1/14/2015
Remove Deletes any applied transfer functions. Applied transfer functions should be removed, unless the PDF is to be
output to the same device that the source PostScript file was created for.
Preserve Retains the transfer functions traditionally used to compensate for dot gain or dot loss that may occur when
an image is transferred to film. Dot gain or loss occurs when the ink dots that make up a printed image are larger or
smaller than in the halftone screen.
Apply Applies the transfer function, changing the colors in the file but doesn’t keep it. This method is useful for
creating color effects in a file.
Preserve Halftone Information Retains any halftone information in files. Halftone information is intended for use with
a particular output device.
Advanced panel options
Advanced options specify which Document Structuring Conventions (DSC) comments to keep in a PDF and how to
set other options that affect the conversion from PostScript. In a PostScript file, DSC comments contain information
about the file (such as the originating application, the creation date, and the page orientation) and provide structure for
page descriptions in the file (such as beginning and ending statements for a prologue section). DSC comments can be
useful when your document is going to print or press.
For more information, see the documents on the Adobe PDF Technology Center at
www.adobe.com/go/learn_acr_pdftechnology_en (PDF, English only).
Note: The ASCII Format option has been removed from Distiller, but is still available as a Distiller parameter.
Allow PostScript File To Override Adobe PDF Settings Uses settings stored in a PostScript file rather than the current
PDF settings file. For more information about customizing PDF settings, see the SDK information on the Acrobat
Developer Center at
www.adobe.com/go/learn_acr_devcenter_en (PDF, English only).
Allow PostScript XObjects PostScript XObjects store fragments of PostScript code to be used when a PDF is printed on
a PostScript printer. Use only in controlled workflows where there is no other option. Available when the Standard or
Smallest File Size is selected from the Default Settings menu.
Convert Gradients To Smooth Shades Converts blends to smooth shades for Acrobat 4.0 and later, improving quality
and reducing file size of PDFs. Distiller converts gradients from Adobe Illustrator, Adobe InDesign, Adobe FreeHand®,
CorelDraw, QuarkXPress, and Microsoft PowerPoint.
Convert Smooth Lines To Curves Reduces the amount of control points used to build curves in CAD drawings, which
results in smaller PDFs and faster onscreen rendering.
Preserve Level 2 Copypage Semantics Uses the copypage operator defined in PostScript Level 2 rather than in
Language Level 3 PostScript. If you have a PostScript file and select this option, a copypage operator copies the page. If
this option is not selected, the equivalent of a showpage operation is executed, except that the graphics state is not
reinitialized.
Preserve Overprint Settings Retains any overprint settings in files being converted to PDF. Overprint settings create
color by printing one ink on top of another ink.
Overprinting Default Is Nonzero Overprinting Prevents overprinted objects with zero CMYK values from knocking
out CMYK objects beneath them.
Save Adobe PDF Settings Inside PDF File Embeds the settings file (.joboptions) used to create the PDF as an
attachment. (To view the settings file, choose View > Show/Hide > Navigation Panes > Attachments in Acrobat.)
Save Original JPEG Image In PDF If Possible Processes compressed JPEG images (images that are already compressed
using DCT encoding) without recompressing them. When deselected, performance improves because only
decompression, not recompression, occurs.