The Principles

1. A research output is not fully Open Access unless it is Accessible.

2. The Open Access movement should seek to remove all barriers to access, including paywalls and others.

3. The research outputs should be Born Accessible by default, rather than accessible on demand or requiring a separate version that is available at a later time or through a different channel. 

4. Accessible means the research output is perceivable, operable, understandable and robust.

5. Accessibility enables usability, and is not just for the print disabled but is for everyone to customise their reading experience.

6. Accessibility enables machine readability, and is not just for humans but for robustness/compatibility with all automated systems.

7. Accessibility helps a research output to reach its true audience, not just those who can perceive/operate/understand it, or access it.

8. Disabled people have economic disadvantages that Open Access initiatives focused on removing paywalls can help with.

9. Diamond Open Access has advantages in accessibility that closed access and other types of open access doesn’t.