308 IBM Content Manager OnDemand Guide
13.4.1  PDF data
Portable Document Format (PDF) data is an increasingly common data type that can be 
archived within Content Manager OnDemand. The following key advantages are available by 
using this data type as a document format:
/SM590000It is a read-only format that does not require any external resources, such as images or 
fonts. It is self-contained.
/SM590000The viewer for PDF can be downloaded at no charge from the Adobe website and the 
browser plug-ins for PDF are also available at no charge. 
During PDF document creation, resources, such as images and custom fonts, are placed in 
the data stream once and then referenced many times from within the PDF file. If a large 
report is produced from many small documents, that report requires only one copy of the 
resources. 
However, when the PDF is indexed, the PDF Indexer creates many PDF documents from the 
input file. Each of these documents requires a certain number of PDF structures, which define 
a document. These documents are concatenated together in the .out file, and then loaded 
into Content Manager OnDemand as separate documents. Because the resources are 
extracted and placed into a separate resource file, they are not included in each document. 
For an illustration of the process, see Figure 13-3. 
Figure 13-3   PDF indexing
If no resources are collected, the size of the .out file, which contains all of the individual 
documents, might be larger than the original file. For tips about how to reduce the size of the 
output file, see 7.3.5, “PDF indexing: Using internal indexes (Page Piece Dictionary)” on 
page 173.
Converted to
Document
Resources
One PDF file 
with
documents
and resources
Many
separate PDF 
documents
with resources 
removed in 
the .out file