The PDF/A format was designed for long term storage of PDF documents.
Government agencies and large organizations are already adopting this
standard for storage of documents.
PDF Writer has support for the commonly used PDF/A-1b variant of this
standard. This type of documents contain extra descriptive properties and
font information. Additional color information is also added to PDF/A
If you compare a PDF/A document to the equivalent non PDF/A document,
you will usually see an increase in the size of the document.
The increase in size is often related to the inclusion of the color
profile. Profiles vary in size from a few kilobytes to megabytes.
There are different software packages on the market that claim that
they can validate if a specific document conforms to the PDF/A standard.
However, real life examples show that they do not always agree.
The PDF Writer will try to make as many of the validators happy as
possible. This also means that the default color profile is big compared
One could argue that as long as the document is valid when tested by
Adobe Acrobat Preflight module it is good. Adobe is considered the
market leader when it comes to PDF documents. You can choose a different
and much smaller color profile (ICC) if you wish to validate in the
Adobe Preflight module.
Changing the ICC Profile
Since version 10.2 the PDF Writer has an icc setting that allows you to
change the ICC profile used when creating PDF/A documents.
Two color profiles are shipped with the program and you use the global.ini
to set a different ICC profile.
This is an example of a global.ini with a setting that will change the
ICC profile to the smaller profile that will validate in Adobe Acrobat Pro.
icc=C:\Program Files\bioPDF\PDF Writer\icc\eciRGB_v2.icc