Pre-Ship Checklist

Speed is CRO

INP: aim ≤ 200ms at p75 (responsiveness)
CLS: avoid layout shift (reserve image space)
Fonts: swap + stable fallbacks
Rule: “fast enough” beats “pretty later”

Pre-Ship Checklist

Primary action is obvious in 3 seconds.
CTA is the most dominant element on screen.
All interactive elements have hover/focus/pressed/disabled states.
Links look like links (underlined).
Forms are one-column and errors are recoverable.

Minimum touch targets are respected everywhere.
Contrast is compliant for text and components.
Pages load fast and do not shift layout.
Responsive at breakpoints (especially ≤480px).
Core Web Vitals are not ignored.