SaaS Web App checklist before you ship

Design & UI/UX

0/7

Design system or component library established

Critical

Mobile-first responsive layout

Critical

Dark mode supported (system preference respected)

Important

Empty, loading, and error states designed for all screens

Critical

Consistent iconography throughout the product

Important

Typography scale defined and applied consistently

Important

User onboarding flow designed

Important

Accessibility

0/6

WCAG 2.1 AA compliance target set

Critical

All interactive elements keyboard operable

Critical

Color contrast meets WCAG AA throughout

Critical

Skip navigation link on every page

Important

Screen reader tested with VoiceOver and NVDA

Important

Reduced motion preference respected globally

Important

Performance

0/5

Core Web Vitals targets set (LCP < 2.5s, CLS < 0.1, INP < 200ms)

Critical

Images optimized (WebP/AVIF, correct sizes, lazy loading)

Critical

JavaScript bundle size minimized

Important

Server-side rendering or static generation for public pages

Important

CDN configured for static assets

Important

Analytics & Monitoring

0/5

Analytics tool configured (Posthog, Mixpanel, Segment, or GA4)

Critical

Error monitoring in place (Sentry or similar)

Critical

Key business events tracked (signup, conversion, churn)

Critical

Uptime monitoring configured

Important

Analytics dashboard for key metrics

Important

Marketing & Growth

0/4

Value proposition is clear on the homepage

Critical

Email list collection in place (waitlist or newsletter)

Important

Social proof on key conversion pages

Important

Referral or sharing mechanism

Optional

Testing & QA

0/4

Unit test coverage ≥ 70% for business logic

Important

End-to-end tests for critical user journeys

Critical

Tests run in CI on every PR

Critical

Cross-browser and cross-device testing

Important

SaaS Web App. Work through the list before you ship.

Design & UI/UX

Accessibility

Performance

Analytics & Monitoring

Marketing & Growth

Testing & QA