Performance
- LCP under 2.5s on 4G (test on a real device).
- Images properly sized/compressed; remove unused scripts.
- Avoid heavy client-side libraries for simple UI.
Tracking
- Server-side events for primary conversions (where applicable).
- UTM taxonomy documented; QA in an analytics sandbox.
- Verify deduplication between pixel + server events.
Forms
- Test all fields, validations and error states.
- Confirm success state + thank you flow.
- Verify handoff to CRM/email/webhook and fallback routing.