Adobe Photoshop CS3 - Manual (Page 454)

PHOTOSHOP CS3
User Guide
447
Rich Content PDF Creates accessible PDF files that include tags, hyperlinks, bookmarks, interactive elements, and
layers. This set of options uses PDF 1.5 and embeds subsets of all fonts. It also optimizes files for byte serving. These
PDF files can be opened in Acrobat 6.0 and Adobe Reader 6.0 and later. (The Rich Content PDF preset is in the
Extras folder.)
Note: This preset was called eBook in earlier versions of some applications.
Smallest File Size Creates PDF files for displaying on the web or an intranet, or for distribution through an e-mail
system. This set of options uses compression, downsampling, and a relatively low image resolution. It converts all
colors to sRGB, and (for Distiller-based conversions) does not embed fonts. It also optimizes files for byte serving.
These PDF files can be opened in Acrobat 5.0 and Acrobat Reader 5.0 and later.
Standard (Acrobat only) Creates PDF files to be printed to desktop printers or digital copiers, published on a CD, or
sent to a client as a publishing proof. This set of options uses compression and downsampling to keep the file size
down, but also embeds subsets of all (allowed) fonts used in the file, converts all colors to sRGB, and prints to a
medium resolution. Note that Windows font subsets are not embedded by default. PDF files created with this settings
file can be opened in Acrobat 5.0 and Acrobat Reader 5.0 and later.
For more information about shared PDF settings for Creative Suite components, see the PDF Integration Guide on
the Creative Suite DVD.
About PDF/X and PDF/A standards
PDF/X and PDF/A standards are defined by the International Organization for Standardization (ISO). PDF/X
standards apply to graphic content exchange; PDF/A standards apply to long-term archiving of electronic
documents. During PDF conversion, the file that is being processed is checked against the specified standard. If the
PDF will not meet the selected ISO standard, a message appears, asking you to choose between canceling the
conversion or going ahead with the creation of a noncompliant file.
The most widely used standards for a print publishing workflow are several PDF/X formats: PDF/X-1a, PDF/X-3,
and (in 2007) PDF/X-4. The most widely used standards for PDF archiving are PDF/A-1a, and PDF/A-1b (for less
stringent requirements).
Note: For more information on PDF/X and PDF/A, see the ISO website and the Adobe website .
PDF compatibility levels
When you create PDFs, you need to decide which PDF version to use. You can change the PDF version by switching
to a different preset or choosing a compatibility option when you save as PDF or edit a PDF preset.
Generally speaking, unless there’s a specific need for backward compatibility, you should use the most recent version
(in this case version 1.7). The latest version will include all the newest features and functionality. However, if you’re
creating documents that will be distributed widely, consider choosing Acrobat 5 (PDF 1.4) or Acrobat 6 (PDF 1.5)
to ensure that all users can view and print the document.
The following table compares some of the functionality in PDFs created using the different compatibility settings.