converting it to PDF 1.3. A PDF file may be created by Adobe
Acrobat Distiller 5.0 and later and still be compatible with PDF
1.3.
Nonoptimal compression
Identifies the methods of compression for the PDF file. PDF
Preflight uses ZIP and LZW compression for color images that
are not optimally compressed and CCITT compression for
monochrome images that are not optimally compressed.
To use ZIP compression select the
Fix
check box.
Document is ASCII encoded
Determines whether the PDF file uses ASCII or binary encoding.
ASCII encoding works on all platforms and operating systems.
Binary encoding provides smaller files and is acceptable in most
situations.
To remove the ASCII encoding select the
Fix
check box.
Document is damaged
Determines whether the PDF file has missing objects, such as
graphics.
PDF2Go Files
Detects files from PDF2Go software. PDF Preflight detects
whether the PDF file is a Brisque or PDF2Go file or a PDF
version of the Brisque Export PostScript file. PDF2Go files
include only CEPS (CT/LW) data and should be protected from
data manipulation, such as overprint and trapping.
Document contains Layers
PDF Preflight detects whether the PDF file has layers.
Document structure is compressed
PDF Preflight detects whether the PDF file metadata structure is
compressed.
Security
Encryption
Determines whether the PDF file uses any encryption. Third-
party software, such as Acrobat, can use encryption to restrict
access to a PDF file. You can also set a password that restricts
functions (for example, printing or selecting text) and restricts
PDF preflight
281
