Core Web Vitals Checker (LCP, CLS, INP)

Core Web Vitals, explained without the jargon

Core Web Vitals are user-experience signals. They measure how fast your content becomes usable, how stable the layout is, and how responsive the page feels when someone clicks or taps.

SpeedScan.ai helps you understand which metric is hurting you and what fixes typically move it—without burying you in a wall of technical hints.

• LCP: the main content should appear quickly
• INP: interactions should feel instant, not delayed
• CLS: elements shouldn't jump around while loading

How to improve your vitals

Start with the biggest bottlenecks: slow server response, huge images, render-blocking scripts, and heavy third-party tags. Then tackle layout stability and interaction delays.

Improve one major issue at a time, then re-scan. That's how you get consistent gains instead of random changes.

Run a scan and turn it into a fix-first plan

A speed report only helps when it changes what you do next. SpeedScan.ai is built for that moment: it explains your metrics in plain English, highlights the fixes that usually create the biggest real-world improvement, and helps you confirm progress with re-scans.

If you're working on a client site, an eCommerce store, or a marketing landing page, this workflow saves time because you focus on the few changes that actually move the needle.

• Scan desktop and mobile separately
• See Core Web Vitals (LCP, CLS, INP) and key timing metrics
• Get a practical AI summary that prioritizes fixes by impact
• Track scan history to prevent regressions

Frequently Asked Questions