Most startup sites look clean — and still slow growth. This checklist helps you verify two things that matter every week: pages are fast for users (Core Web Vitals on real mobile) and your setup is fast for teams (Webflow CMS + Components so marketing ships without devs, GA4 events that measure real conversions, and consent that doesn’t nuke your data).

Built for post-seed and Series A realities, it focuses on what actually moves the needle: INP/LCP/CLS, image/JS budgets, modular Webflow structure, GA4 event mapping (cta_click, form_start, form_submit), UTM → CRM persistence, and AEO-friendly content hierarchy — so your site operates like a growth system, not a brochure.