DLI Implementation and Reference Guide - Datalogics

1.12 DLI Implementation and Reference Guide
Adobe PDF Library Version Control
The Adobe PDF Library is a set of routines associated with other Adobe products
such as Adobe Acrobat, Adobe Acrobat Distiller and Adobe Reader. The original
Adobe PDF Library was labeled as version 1.2 in order to maintain consistency with
the PDF standard of 1.2. The next version of the Library was labeled version 4.0 (and
subsequently 4.05) due to the tie-in with Acrobat v4.0. Versions 4.0/4.05 of the
Library complied with the PDF standard of 1.3. Adobe PDF Library v5.0.2Plus
complies with PDF Standard 1.4, and the latest Adobe PDF Library v6.x complies
with PDF Standard 1.5.
PDF Level Declarations in Output
By default, the Adobe PDF Library declares the current PDF level compliance in
output PDF files; e.g. Adobe PDF Library v6.x applications building pages without
Datalogics Interface methods will generate PDF v1.5. Applications generating output
via DLI may generate different PDF declarations depending on file contents and
application coding; see below and “Adobe PDF Library Version Control” on page 2.6
for more details.
NOTE: Viewing a latest-generation PDF in a prior-version Adobe Acrobat or Adobe
Reader (e.g. viewing PDF v1.5 in Acrobat or Reader v5.0 or earlier) can produce a
popup warning of a PDF level mismatch, to warn the user that certain PDF features
new to that version may not be supported by the viewing program. While this is
only a warning, it may concern some users who have not upgraded to the latest
viewer. You should ensure that your document features are backwards-compatible
to older viewer versions where possible, or warn your users that a viewer upgrade
will be required in order to take full advantage of features in your document, as
appropriate.
PDF Level Declarations via DLI
Applications built with Adobe PDF Library and Datalogics Interface (e.g. Adobe PDF
Library v6.1.1Plus and DLI v3.0.19) and using DLI methods for output will have
their output PDF compliance set appropriately by DLI. By default, files will identify
themselves as PDF v1.3 compliant, or higher values if appropriate, based on the