https://bugs.freedesktop.org/show_bug.cgi?id=62728
Priority: medium
Bug ID: 62728
Assignee: [email protected]
Summary: Support for PDF/A-2 (ISO 19005-2:2011)
Severity: enhancement
Classification: Unclassified
OS: All
Reporter: [email protected]
Hardware: All
Status: UNCONFIRMED
Version: unspecified
Component: Printing and PDF export
Product: LibreOffice
PDF/A is widely used for long-term preservation of documents. For example many
governments (a.o. European, Austrian, Dutch, Brazilian, German, Swiss)
recommend or mandate PDF/A.
LibreOffice already supports exports to PDF/A-1, which is great. PDF/A-2 is the
second part to the standard. It adds some significant extra features. Therefore
it is important that LibreOffice will support PDF/A-2.
In the below you will find some basic information on PDF/A-2 from Wikipedia and
some pointers to more background information.
---
PDF/A-2 address some of the new features added with versions 1.5, 1.6 and 1.7
of the PDF Reference. PDF/A-2 should be backwards compatible, i.e. all valid
PDF/A-1 documents should also be compliant with PDF/A-2. However PDF/A-2
compliant files will not necessarily be PDF/A-1 compliant.
Part 2 of the PDF/A Standard is based on a more recent version, PDF 1.7 (ISO
32000-1), rather than PDF 1.4 and offers a number of new features:
* JPEG2000 image compression
* support for transparency effects and layers
* embedding of OpenType fonts
* provisions for digital signatures in accordance with the PDF Advanced
Electronic Signatures – PAdES standard
* possibility to embed PDF/A files in PDF/A-2 for archiving of sets of
documents as individual documents in a single file.[5]
Part 2 defines three conformance levels: PDF/A-2a, PDF/A-2b and a new
conformance level PDF/A-2u. PDF/A-2u represents Level B conformance (PDF/A-2b)
with the additional requirement that all text in the document have Unicode
mapping.
---
Background information:
- http://en.wikipedia.org/wiki/PDF/A#PDF.2FA-2
-
http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=50655
- http://www.digitalpreservation.gov/formats/fdd/fdd000319.shtml
- http://www.scl.org/site.aspx?i=xb965
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