Complete UXQA method material quantitative design quality assurance, from design handoff to the production gate. Based on V1 (the full version) of the method applied at Itaú BBA / Salesforce ecosystem.

What it is

UXQA turns perceived quality into a number. Every screen delivered by engineering is compared against the prototype through weighted criteria, producing an acceptance rate (%) that objectively decides whether the screen ships.

Criteria weights (inherited from V1)

Criterion Weight What it measures
Usability 30% Nielsen heuristics, flow clarity, error prevention
Accessibility 25% WCAG 2.2 AA conformance
Visual consistency 25% Fidelity to the prototype and the design system
Efficiency / Performance 20% Response time, fluidity, number of steps

Scoring rule (applies to every page)

Acceptance rate = points earned ÷ sum of applicable weights

That third state is what stops a criterion irrelevant to a given screen (say, file upload on a screen with no upload) from unfairly dragging the score down.

Reading the score

Range Reading Action
≥ 90% Approved Ships to production
75–89% Approved with reservations Ships with a dated fix backlog
< 75% Rejected Goes back to engineering

The five stages

  1. Design Definition of Done - screen sign-off before production
  2. Heuristic Evaluation Scorecard - the weighted score across Nielsen + WCAG
  3. UX Scorecard by screen - the acceptance dashboard and screen comparison
  4. Design System Compliance - component compliance and adoption
  5. Quality Gate - the gate between dev and production