PDF/UA
| 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 |
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.
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".