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Monitor your Core Web Vitals over time
LCP, CLS, INP, FCP, TBT — tracked per device on every scan. Google has used CWV as a ranking signal since 2021.
The metrics VitaPulse tracks
Each metric has a Google-defined threshold. VitaPulse measures them on mobile and desktop separately.
LCP
Largest Contentful Paint
FCP
First Contentful Paint
CLS
Cumulative Layout Shift
TBT
Total Blocking Time
What poor CWV costs
Performance metrics connect directly to ranking and user behavior.
A Google ranking signal since 2021
Core Web Vitals became part of Google Search ranking in May 2021. Poor LCP or CLS scores can lose you positions against competitors who pass the thresholds.
Users leave slow pages
LCP above 4 seconds is rated 'poor' by Google. At that point Lighthouse scores the performance metric below 50 — a red flag in every VitaPulse report.
Load time and conversion
Slower LCP means fewer users reach your content. Tracking the metric over time lets you measure the effect of each optimization.
How VitaPulse tracks CWV
Automated scans on your schedule. Per-device results. History you can act on.
Continuous per-device monitoring
Every scan measures LCP, CLS, TBT, FCP, INP, and TTFB on mobile and desktop independently. Charts show evolution across all your scans.
Fix prioritized by impact
VitaPulse lists each opportunity with an estimated time saving in milliseconds. You see the highest-value fix before you open a code editor.
Regression alerts on threshold breach
Set a threshold per metric. When a scan crosses it, VitaPulse emails you the before/after comparison.
CWV included in every PDF report
Each downloadable report includes the full CWV section with metric values, status, and device comparison. Shareable via public link.
8 metrics tracked per device
- LCP — Largest Contentful Paint (good: < 2.5 s)
- FCP — First Contentful Paint (good: < 1.8 s)
- CLS — Cumulative Layout Shift (good: < 0.1)
- TBT — Total Blocking Time (good: < 200 ms)
- INP — Interaction to Next Paint (good: < 200 ms)
- TTFB — Time to First Byte (good: < 800 ms)
- Speed Index (good: < 3.4 s)
- TTI — Time to Interactive (good: < 3.8 s)