Next.js Core Web Vitals pre-launch checklist
30-item list we run on every Next.js site before launch. LCP, INP, CLS, TTFB focused.
Next.js 15/16-specific CWV checklist · image priority, font preload, server-component boundaries, RSC streaming, Edge runtime decisions. The playbook behind the 34% organic lift case study.
WHAT'S INSIDE
- ·LCP <2.5s playbook in 6 steps
- ·INP <200ms: deferring event handlers
- ·CLS <0.1: aspect-ratio + font-display swap
- ·Next/Image priority + fetchpriority matrix
- ·Speculation Rules template
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