Libreoffice

Libreoffice
An office suite with command line options for PDF/A conversions
Homepage:	https://www.libreoffice.org/
License:	free
Platforms:	Linux, Windows, MacOS

Description

Create PDF/A from tables, text or presentation slides. With LibreOffice format conversions can also be automated (via Windows command line, Ubuntu unoconv).

User Experiences

[https://ask.libreoffice.org/en/question/2590/convert-files-to-pdfa-on-command-line-headless-mode/ ]