Shortcut 1
Run an automated scanner. Call it done.
Free or low-cost scanners (axe-core, Lighthouse, WAVE) flag computed-CSS contrast, missing alt text, and ARIA syntax. They cannot evaluate keyboard interaction order, ARIA state changes during user flow, focus traps inside dialogs, dynamic-content announcements, or contrast on rendered pixels behind images and gradients. WebAIM's annual audit of one million homepages consistently finds critical WCAG failures on the majority of sites scanners pass clean.
Why it fails legally: A scanner report does not satisfy DOJ's WCAG 2.1 AA standard. Plaintiffs' counsel routinely demonstrate clean-scan sites with failing user flows.