Core Web Vitals Explained: LCP, INP and CLS
Core Web Vitals are three measurements Google uses to judge how a real person experiences your page: how quickly the main content appears, how responsive the page feels, and how stable the layout is while it loads.
Understanding the three metrics helps you read the reports your team shares and prioritise the work that matters most.
Where to Find Your Scores
You do not need special software to see your Core Web Vitals. Google reports them in free tools, drawn from real visitors, so you can track progress without guesswork.
- Search Console shows scores for groups of similar pages.
- PageSpeed Insights reports a single page in detail.
- The Chrome browser tools give an instant lab reading.
- Your team can share regular summaries in reporting.
How We Bring Them Into the Green
Each metric has its own typical causes and fixes, so improving them is rarely a single change. We work through the most impactful issues for your pages, then re-measure to confirm the gain is real for actual visitors rather than just in a lab test.
- For loading speed, we lighten and prioritise the main content.
- For responsiveness, we trim and defer heavy JavaScript.
- For stability, we reserve space for images, fonts and embeds.
- Throughout, we focus on the pages that matter most to your goals.
The Three Metrics
Each metric captures a different part of the experience. Together they give a rounded picture of perceived speed and stability.
| Metric | Measures | Good score |
|---|---|---|
| LCP | Time for the largest element to appear | Under 2.5 seconds |
| INP | Responsiveness to taps and clicks | Under 200 ms |
| CLS | Unexpected layout movement | Under 0.1 |
Frequently Asked Questions
Do all three need to pass?
Google assesses them together, so we aim to get every metric into the green band rather than chasing one in isolation.
Where do these scores come from?
They are gathered from real Chrome users visiting your site, then summarised in tools such as Search Console and PageSpeed Insights.
If you need a hand with any of this, your Progressive Robot delivery team is ready to help. Raise a ticket from the Support area of your client portal or speak to your account manager and we will guide you through the next steps.