These accessibility best practices can be used across items. Think of them when you are creating a word document, a Power Point presentation, a website, or a PDF.
Don't shy away from using images:
"Images and graphics make content more pleasant and easier to understand for many people, and in particular for those with cognitive and learning disabilities. They serve as cues that are used by people with visual impairments, including people with low vision, to orient themselves in the content." -- World Wide Web Consortium (W3C). (2017). Web Accessibility Tutorials. Retrieved from: https://www.w3.org/WAI/tutorials/images/
The World Wide Web Consortium (W3C) has created a very useful guide on how to create useful alt-text.
CUNY Assistive Technology Services (CATS) provides an unlimited license for a captioning software called MovieCaptioner available to CUNY faculty and staff. You do NOT need to be a student, needing an accommodation, to ask CATS to create video captioning for your videos, they will help and produce captions for all video content being created for use. If you want to use MovieCaptioner and/or have questions contact the CATS office.
People who use the web have a growing variety of characteristics. As web developers, we can not assume that all our users are accessing our content using the same web browser or operating system as we are, nor can we assume they’re using a traditional monitor for output, or keyboard and mouse for input. Consider these user characteristics:
An accessible website works for all of these users, and countless others not mentioned.
University of Washington's "Developing Accessible Websites" Retrieved from: https://www.washington.edu/accessibility/web/