Which PDF standard is also known as ISO 14289-1?

The correct answer is PDF/UA-1, which is identified as ISO 14289-1. PDF/UA stands for Portable Document Format/Universal Accessibility, and it is a standard that ensures accessibility of PDF documents for people with disabilities. This standard provides guidelines to make sure that PDF documents are usable with assistive technologies, thus facilitating better access to information for individuals who may rely on screen readers or other assistive means.

PDF/UA addresses specific requirements for the structure of a PDF document to ensure that all content can be interpreted and navigated properly. This includes features like tagged content, proper reading order, and navigational aids, which are crucial for accessibility compliance.

Understanding the standards distinguishes the various purposes of other PDF formats. For instance, PDF/A is an archival format, while PDF/X relates to the printing industry. These differences highlight why PDF/UA-1 is recognized for its focus on accessibility, making it essential for anyone aiming to create accessible documents.