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CORE WEB VITALS, TRACKED

Know the moment your Core Web Vitals slip.

Every scheduled crawl runs a full Lighthouse audit against your selected pages, on mobile, desktop, or both — so LCP, CLS, and INP regressions show up next to a baseline, not buried in a one-off report.

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◇ WHAT WE CHECK
Full Lighthouse performance audits on every selected page
Core Web Vitals regressions — LCP, CLS, and INP versus your baseline
JS / CSS / image / font bundle-size breakdown
Historical trend sparklines per metric
Mobile, desktop, or both device profiles
// HOW IT WORKS
01

Add your site

Paste a URL — Fortely fingerprints your framework, host, sitemap, and robots.txt in seconds.

02

Pick a schedule

Choose how often to scan, from every 4 hours to weekly, and a mobile / desktop / both device profile.

03

Get alerted on regressions

Every scan is diffed against your last baseline — you only hear about what actually changed.

Lighthouse monitoring, not a one-off report

A single Lighthouse run tells you where you stand today. Fortely runs the same audit on a schedule and compares it to your last scan, so a Core Web Vitals regression from a new dependency, an unoptimized image, or a third-party script shows up as a flagged diff instead of a slow decline nobody notices.

// FAQ
What is a Core Web Vitals regression?+
A meaningful drop in LCP, CLS, or INP compared to your site's last scanned baseline — not just a raw score, but a change from where you were.
Does Fortely use real Lighthouse audits?+
Yes — every scan runs Google Lighthouse via a real headless Chromium browser against your live pages, not a synthetic estimate.
Can I monitor mobile and desktop separately?+
Yes — choose mobile, desktop, or both when you add a site, and every selected page is audited under that device profile.
How many pages get a full Lighthouse audit?+
Every page you select, up to your plan's monthly credit budget — see the pricing page for how credits map to pages and schedule.
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