Adobe InDesign CS3 - Manual (Page 489)

INDESIGN CS3
User Guide
482
most monochrome images. Group 3, used by most fax machines, compresses monochrome bitmaps one row at a
time. Run Length compression produces the best results for images that contain large areas of solid black or white.
Note: Grayscale images that have been colorized in InDesign are subject to the compression settings for Color Images.
However, grayscale images colorized with a spot color (and [None] applied to their frames) use the compression settings
for grayscale.
Image Quality Determines the amount of compression that is applied. For JPEG or JPEG 2000 compression, you
can choose Minimum, Low, Medium, High, or Maximum quality. For ZIP compression, only 8-bit is available.
Because InDesign uses the lossless ZIP method, data is not removed to reduce file size, so image quality is not
affected.
Tile Size Determines the size of the tiles for progressive display. This option is only available when Compatibility is
set to Acrobat 6 (1.5) and later, and Compression is set to JPEG 2000.
Compress Text And Line Art Applies Flate compression (which is similar to ZIP compression for images) to all text
and line art in the document, without loss of detail or quality.
Crop Image Data To Frames May reduce file size by exporting only image data that falls within the visible portion of
the frame. Do not select this option if postprocessors might require the additional information (for repositioning or
bleeding an image, for example).
Marks and Bleeds options for PDFs
Bleed is the amount of artwork that falls outside of the printing bounding box, or outside the crop marks and trim
marks. You can include bleed in your artwork as a margin of error, to ensure that the ink extends all the way to the
edge of the page after the page is trimmed or to ensure that a graphic can be stripped into a keyline in a document.
You can specify the extent of the bleed and add a variety of printer’s marks to the file.
See also
“Specify printer’s marks” on page 550
Color management and PDF/X output options for PDFs
You can set the following options in the Output area of the Export Adobe PDF dialog box. Interactions between
Output options change depending on whether color management is on or off, whether the document is tagged with
color profiles, and which PDF standard is selected.
Note: For quick definitions of the options in the Output area, position the pointer over an option and read the
Description text box at the bottom of the dialog box.
Color Conversion Specifies how to represent color information in the Adobe PDF file. All spot color information is
preserved during color conversion; only the process color equivalents convert to the designated color space.
• No Color Conversion Preserves color data as is. This is the default when PDF/X-3 is selected.
• Convert to Destination Converts all colors to the profile selected for Destination. Whether the profile is included
or not is determined by the Profile Inclusion Policy.
• Convert to Destination (Preserve Numbers) Converts colors to the destination profile space only if they have
embedded profiles that differ from the destination profile (or if they are RGB colors, and the destination profile is
CMYK, or vice versa). Untagged color objects (those without embedded profiles) and native objects (such as line art
or type) are not converted. This option is not available if color management is off. Whether the profile is included or
not is determined by the Profile Inclusion Policy.