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Understand

Connect real page speed to real conversion loss

Performance monitoring in Quanrel tracks Core Web Vitals, crawlability, and indexation from real visitor sessions, and connects each issue to its actual effect on conversion.

Lab-based speed scores tell you what could be slow. Quanrel tells you what is slow for real visitors, and how much it's costing you in conversions.

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Core Web Vitals — live
Live in your Quanrel dashboard
LCP — Largest Contentful PaintGood
INP — Interaction to Next PaintNeeds work
CLS — Cumulative Layout ShiftGood
Mobile LCPPoor
Why it matters

What happens without Performance

01

Synthetic scores don't reflect real users

A lab test on one connection speed rarely matches what your actual visitors experience.

02

Speed and conversion are reported separately

Engineering sees Core Web Vitals. Growth sees conversion rate. Rarely does anyone see both, together.

03

Prioritisation is guesswork

Without a link to revenue, performance fixes compete for sprint time against everything else, and usually lose.

What you get

Everything Performance gives your team

Real user Core Web Vitals

LCP, INP, and CLS measured from actual visitor sessions, not synthetic tests.

Crawlability & indexation checks

Catch the technical issues that quietly limit organic visibility.

Conversion-linked reporting

See exactly how much a slow page is costing in lost conversions, not just a speed score.

Prioritised fix list

Performance issues ranked by revenue impact, ready to hand to engineering.

How it works

From install to insight

1

Real user data is captured

Core Web Vitals are measured from actual visitor sessions as they browse.

2

Issues are linked to conversion

Slow or broken pages are connected to their real effect on conversion rate.

3

Fixes are prioritised by impact

Engineering gets a ranked list, backed by revenue evidence, not just a score.

Real users
Not synthetic lab tests, on every tracked page
3 metrics
LCP, INP, and CLS, tracked continuously
4KB
Tracker footprint — built to avoid harming the scores it measures
Related capabilities

Works alongside Performance

Pages

Landing Page Analytics gives every page on your site a single scorecard covering engagement, performance, technical issues, and conversion behaviour — so underperforming pages are obvious, not buried in separate reports.

Site Issues

Site Issue Detection continuously scans your site for technical, SEO, and performance problems, and ranks each one by its likely conversion and revenue impact.

Reports

Business Value Reports translate conversion, engagement, and optimisation data into revenue terms, using your own commercial assumptions, so results are easy to present to leadership.
FAQ

Common questions about Performance

Is this the same as Google PageSpeed Insights?

No. PageSpeed Insights is largely lab-based. Quanrel measures Core Web Vitals from your real visitors and connects the results to conversion data.

Will the tracker itself slow my site down?

No. The script is under 4KB, loads asynchronously, and is built specifically to avoid affecting the Core Web Vitals it measures.

Can I see performance by page or by segment?

Yes. Performance data can be viewed per page, per device type, and per traffic segment.

Ready to see performance on your own site?

Lab-based speed scores tell you what could be slow. Quanrel tells you what is slow for real visitors, and how much it's costing you in conversions.

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