Among all the variety of different existing variants of PDF, PDF/UA is definitely the one that shall become the most widespread. In a digital era, the Web became the major way to get around with many aspects of life, and people must do more and more interactions digitally. Such entities as state authorities, suppliers of services, banks, etc., publish an increasing number of documents on their websites. When people deal with them, more and more of self-service, self-engagement is expected, which means all the people shall be equally able to use those documents effectively. But worldwide there are an estimated 253 million people with vision impairment; and from 3 to 7 percent suffer from reading disorder (dyslexia). Therefore, the documents must be provided in a form that allows those people to access the information on their own. And that’s exactly what PDF/UA is about: providing all people equal accessibility to information in documents by using just one universal format.