GitHub's aim is to be the home for all developers. To be inclusive means we must consider accessibility at the core of how we design.
15% of the world's population has a disability (estimated by the World Health Organization based on 2010 data), and that doesn't take into consideration those under temporary or situational disabilities.
In many cases, devices that have been designed with accessibility in mind for a portion of the population end up benefiting everyone. Take the OXO brand's Good Grips line of products; although they were developed for people who have arthritis, most people found them easier to use than other product lines.
When you consider accessibility from the beginning of the design process and incorporate it throughout, it becomes part of an established design process that seeks to include everyone, of all abilities, and allows everyone to achieve more.
GitHub aims for Web Content Accessibility Guidelines (WCAG) 2.1 AA compliance. This includes all of WCAG 2.0 AA plus additional considerations.
Currently, Section 508 (required by law in the United States) follows WCAG 2.0 AA guidelines for compliance.
While there are a multitude of disabilities to consider, the majority will fall into one of these categories:
Each disability category can be further divided into three sub-categories:
For an informative list on real-life disability situations, check An Alphabet of Accessibility Issues, published by The Pastry Box Project.
Microsoft has created a downloadable PDF that looks into the area of inclusive design from a people perspective, with several informative examples. Navigate to the ‘Inclusive 101’ toolkit on the main page of Microsoft’s Inclusive Design website.
If you're GitHub staff and need help with accessibility:
Accessibility is a priority for GitHub. If you ever encounter accessibility related issues when using github.com, please don’t hesitate to get in touch via the contact page or email firstname.lastname@example.org with your concerns.
For information about the accessibility compliance of GitHub products, please refer to the VPAT report, outlining §508 accessibility information for GitHub.com, GitHub Enterprise, and GitHub Desktop.