Performance · Frontend

Core Web Vitals for founders: what matters and what does not

Core Web Vitals affect both ranking potential and user trust. But many teams optimize metrics without improving experience. Focus on the vitals that map to real perception.

Largest Contentful Paint (LCP)

Users should see meaningful content fast. Prioritize image optimization, reduce render-blocking scripts, and avoid slow server responses.

Cumulative Layout Shift (CLS)

Unexpected movement kills trust. Reserve space for media, avoid injecting dynamic UI above existing content, and stabilize typography loading.

Interaction to Next Paint (INP)

Responsiveness is now a core quality signal. Reduce heavy main-thread tasks, split code intelligently, and keep interactions lightweight.

Performance is not a one-time task. Build monitoring into delivery so you can improve continuously as content and features evolve.