ACCESSIBILITY TESTING TAKES MORE THAN A SCAN

Summary from the TLDR Design newsletter

Automated accessibility scanners can quickly identify basic issues on webpages but typically detect only about 40% of problems and cannot evaluate real usability, making them insufficient on their own. Effective accessibility evaluation requires combining automated tools with manual checks (for structure and semantics) and experiential testing tools (that simulate disabilities) to ensure users can truly understand, navigate, and interact with a site.