ISO-19005 compact long-term archiving with PDF/A
Reading tip on the subject of ISO-19005: "PDF/A compact 2.0"
The PDF/A format has been ISO-19005 for the long-term archiving of electronic documents since 1 October 2005. The format provides users with the necessary assurance that documents retain their appearance and readability permanently - regardless of which application or system was used to create them. A distinction must be made between the original format and the standard parts PDF/A-2 and PDF/A-3, which were published in June 2011 and October 2012 respectively.