The goal of the Accessibility Toolkit – 2nd Edition is to provide resources for each content creator, instructional designer, educational technologist, librarian, administrator, and teaching assistant to create a truly open textbook—one that is free and accessible for all students.

WAVE is an accessibility evaluation tool from WebAIM. Just enter a url into the tool and WAVE will provide you with a report of adherence with Web Content Accessibility Guidelines (WCAG) and suggest changes for improvement. 

The UDL Guidelines are a tool used in the implementation of Universal Design for Learning, a framework to improve and optimize teaching and learning for all people based on scientific insights into how humans learn.

Rubric to help you see where you lie along the continuum of UDL best practices. Novak & Rodriguez 2018.