It is not always easy to tell at first glance whether an existing PDF file actually meets the ISOs PDF/A standard. To be absolutely certain, you can perform a validation check which examines all relevant parts of a document.
callas pdfToolbox Desktop is the easiest yet most powerful PDF preflight and correction application on the market. You can fix PDF problems during preflight or with a click of the button in the Switchboard. Flatten transparency, convert fonts to outlines, convert office documents or even PostScript directly into PDF, compare versions of PDFs, visualize ink coverage no task is too difficult for callas pdfToolbox Desktop.
The “Bavaria report” is a comparative review of PDF/A validators. It assesses the output of 7 PDF/A validation tools for conforming and non-conforming documents in the hope of providing guidelines for users and encouraging vendors of PDF/A validation tools to optimize their products.