Since 2005, PDF/A has been the standard for document archiving in the long term. The first part, PDF/A‑1, was based on PDF version 1.4. This year, the second part, PDF/A‑2, was released, and it introduced a lot of functional extensions. This article explains the difference between PDF/A‑1 and PDF/A‑2 and answers the question, what this means to the user.
Read the entire article: PDF/A-1 vs PDF/A-2