Accessibility (A11y for short) is the technical branch of inclusive design. Accessibility is a science: it knows what markup is required to make the text available to the visually impaired; it knows the minimum button size for someone with limited motor control; it knows how complex navigation can be for someone with cognitive dysfunction. Accessibility is the engine that powers an inclusive design.

Because accessibility is so complex, it takes a huge wealth of knowledge to do it well. Luckily for you and me, there’s now a free resource you can use to brush up on your skills and improve the ROI of your site.

Stark has just acquired a11yresource and relaunched it as the Stark Public Library — reportedly the largest accessibility resource on the web. The library contains around a thousand different resources. You’ll find blog articles, checklists, formal courses, tools, links to web standards, and a whole lot more. As the library grows, the expectation is that Stark will add new features aimed at fostering a community.

Stark is a suite of accessibility tools for designers that integrates with XD, Sketch, and Figma. It’s free to use the basic package, and the commercial plan is $60 per year. The Public Library is free for everyone to access.