ux

Scope one user task on one surface, walk the flow twice, then inspect all 10 Nielsen heuristics including empty, error, and loading states. Rate each finding on the 0–4 severity scale using frequency, impact, and persistence, then report with specific evidence.

Use Nielsen's 0–4 scale combining frequency, impact, and persistence: 0 is not a problem, 1 cosmetic, 2 minor, 3 major, and 4 catastrophe. Rate severity after listing problems, not while hunting, and treat severity 4 as a release blocker.

The review targets WCAG 2.2 Level AA, covering semantic HTML, keyboard operability, visible focus, 4.5:1 text contrast, named controls, and reduced-motion support. It is an inspection pass, not a replacement for a dedicated axe or Lighthouse compliance scan.

No. Heuristic evaluation is an inspection method that finds candidate usability problems, but it cannot prove how real people behave. The method explicitly flags what still needs observation of an actual user completing the task.

Do not use it to restyle visuals or judge aesthetic craft, which belongs to visual design review. It also does not fit when you need behavioral evidence, such as conversion impact or learnability, which requires user research instead.