tpo-interface-quality-criteria

Evaluate each screen against twelve categories: clarity, task completion, consistency, accessibility, visual hierarchy, content, forms, responsiveness, performance, error recovery, data display, and security. Assign a verdict of Pass, Pass with minor issues, Fail, or Blocked, then record results in the scorecard.

The interface must support keyboard navigation, logical focus order, visible focus states, sufficient contrast, labeled form controls, field-connected error messages, and meaningful headings. Color alone must not communicate status, and custom widgets must mimic native behavior.

Block release when the main task cannot be completed, critical accessibility failures exist, data loss can occur without warning, permissions are incorrect, sensitive data is exposed, core error states are missing, mobile layout is broken, or required legal disclaimers are absent.

The suggested targets are LCP of 2.5 seconds or less, INP of 200 milliseconds or less, and CLS of 0.1 or less. Interfaces must also show loading states for slow operations and avoid unexpected layout shifts.

A checklist review cannot replace real user testing or automated accessibility audits, and it depends on the reviewer having complete requirements, designs, and implementation details. When those inputs are missing, the correct verdict is Blocked rather than Pass or Fail.