Core Web Vitals for B2B SaaS: What Actually Moves the Needle

LCP

• Use next/image with proper sizes and preload the LCP asset.
• Self‑host fonts with next/font; avoid FOIT/FOUT.

CLS

• Reserve space for images/ads; avoid dynamic height shifts.
• Load critical UI before non‑essential widgets.

INP

• Defer heavy JS; move work to the server (RSC) and edge where possible.

We set up budgets, monitoring, and fixes that stick. Contact us.