PDF/UA
PDF/UA (PDF/Universal Accessibility), formally ISO 14289, is an International Organization for Standardization (ISO) standard for accessible PDF technology. A technical specification intended for developers implementing PDF writing and processing software, PDF/UA provides definitive terms and requirements for accessibility in PDF documents and applications. For those equipped with appropriate software, conformance with PDF/UA ensures accessibility for people with disabilities who use assistive technology such as screen readers, screen magnifiers, joysticks and other technologies to navigate and read electronic content.
| Filename extension |
.pdf |
|---|---|
| Type code | 'PDF ' (including a single space) |
| Magic number | %PDF |
| Developed by | ISO |
| Initial release | 15 July 2012 |
| Latest release | Part 1:2014 18 December 2014 |
| Extended from | |
| Standard | ISO 14289 |
On February 18, 2015 the US Access Board announced its Proposed Rule for US federal policy on accessibility, commonly known as Section 508. The proposed rule identifies PDF/UA as equivalent to WCAG 2.0 for "appropriate content".