usability-tester
Usability Tester
Overview
Validates that users can successfully complete core tasks through systematic observation and expert evaluation. Covers moderated and unmoderated testing, heuristic evaluation, accessibility checks, and issue severity scoring. Not a substitute for analytics or A/B testing -- those measure what happens, usability testing reveals why.
When to use: Testing user flows, validating designs, identifying friction points, running heuristic evaluations, ensuring users can complete core tasks, planning and executing usability test sessions.
When NOT to use: Analytics or A/B test setup, visual design critique without task-based evaluation, automated UI testing (use a testing framework), performance benchmarking.
Quick Reference
| Method | Best For | Participants | When to Use |
|---|---|---|---|
| Moderated testing | Deep insights, complex flows | 5-8 per persona | Design and prototyping stage |
| Unmoderated testing | Scale, quantitative data | 20-50+ | Pre-launch and post-launch |
| Guerrilla testing | Quick validation, early concepts | 5-10 random | Early concept stage |
| First-click testing | Navigation, information architecture | 20-50 | Any stage, especially IA redesigns |
| Heuristic evaluation | Expert review against principles | 3-5 evaluators | Before user testing, design audits |
More from oakoss/agent-skills
playwright
|
200ui-ux-polish
Iterative UI/UX polishing workflow for web applications. Use when improving visual polish, refining desktop and mobile UX separately, running iterative enhancement cycles, applying design patterns like glassmorphism or bento grids, or auditing accessibility and WCAG compliance. Use for Stripe-level visual quality, responsive optimization, and design system alignment.
153find-skills
|
119knowledge-graph-builder
>
101tailwind
Tailwind CSS v4 patterns and design systems. Use when configuring Tailwind themes, building components, implementing dark mode, using container queries, migrating from v3, integrating shadcn/ui, or fixing build errors. Use for tailwind, css, styling, theme, design-tokens.
85pnpm-workspace
pnpm workspace monorepo management with filtering, catalogs, and shared configs. Use when setting up monorepos, managing workspace dependencies, filtering package commands, or sharing configuration across packages.
78