Adobe InDesign CC 2015 - Manual (Page 546)

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Exporting and publishing
Last updated 6/6/2015
• In the Compression area, downsample images to 72 pixels per inch, select automatic compression, and select either
low- or medium-image quality for color and grayscale images. When you work with photographic images, use
Automatic (JPEG) compression; when you work with images that are mostly solid color, such as charts and graphs,
use ZIP compression.
• In the Output area, use the Ink Manager to convert spot colors to process colors.
To reduce the size of PDFs, simply open the PDF in Acrobat 8.0 or later, choose Document > Reduce File Size, and then
specify the compatibility level. For greater control, choose Advanced > PDF Optimizer.
For more information on reducing the size of PDF files, see Acrobat Help and the Adobe website.
Adobe PDF presets
A PDF preset is a group of settings that affect the process of creating a PDF. These settings are designed to balance file
size with quality, depending on how the PDF will be used. Most predefined presets are shared across Adobe Creative
Suite components, including InDesign, Illustrator, Photoshop, and Acrobat. You can also create and share custom
presets for your unique output requirements.
A few of the presets listed below are not available until you move them—as needed—from the Extras folder (where they
are installed by default) to the Settings folder. Typically, the Extras and Settings folders are found in (Windows Vista
and Windows 7) ProgramData\Adobe\AdobePDF, (Windows XP) Documents and Settings\All Users\Application
Data\Adobe\Adobe PDF, or (Mac OS) Library/Application Support/Adobe PDF. Some presets are not available in some
Creative Suite components.
The custom settings are found in (Windows XP) Documents and Settings/[username]/Application Data/Adobe/Adobe
PDF/Settings, (Windows Vista and Windows 7) Users/[username]/AppData/Roaming/Adobe/Adobe PDF/Settings, or
(Mac OS) Users/[username]/Library/Application Support/Adobe/Adobe PDF/Settings.
Review your PDF settings periodically. The settings do not automatically revert to the default settings. Applications and
utilities that create PDFs use the last set of PDF settings defined or selected.
High Quality Print Creates PDFs for quality printing on desktop printers and proofing devices. This preset uses PDF
1.4, downsamples color and grayscale images to 300 ppi and monochrome images to 1200 ppi, embeds subsets of all
fonts, leaves color unchanged, and does not flatten transparency (for file types capable of transparency). These PDFs
can be opened in Acrobat 5.0 and Acrobat Reader 5.0 and later. In InDesign, this preset also creates tagged PDFs.
Illustrator Default (Illustrator only) Creates a PDF in which all Illustrator data is preserved. PDFs created with this
preset can be reopened in Illustrator without any loss of data.
Oversized Pages (Acrobat only) Creates PDFs suitable for viewing and printing of engineering drawings larger than
200 x 200 inches. These PDFs can be opened in Acrobat and Reader 7.0 and later.
PDF/A-1b: 2005 (CMYK and RGB) (Acrobat only) Used for long-term preservation (archival) of electronic documents.
PDF/A-1b uses PDF 1.4 and converts all colors to either CMYK or RGB, depending on which standard you choose.
These PDFs can be opened in Acrobat and Reader versions 5.0 and later.
PDF/X-1a (2001 and 2003) PDF/X-1a requires all fonts to be embedded, the appropriate marks and bleeds to be
specified, and color to appear as CMYK, spot colors, or both. Compliant files must contain information describing the
printing condition for which they are prepared. PDF files created with PDF/X-1a compliance can be opened in Acrobat
4.0 and Acrobat Reader 4.0 and later.
PDF/X-1a uses PDF 1.3, downsamples color and grayscale images to 300 ppi and monochrome images to 1200 ppi,
embeds subsets of all fonts, creates untagged PDFs, and flattens transparency using the High Resolution setting.
note: The PDF/X1-a:2003 and PDF/X-3 (2003) presets are placed on your computer during installation but are not
available until you move them from the Extras folder to the Settings folder.