Website performance monitoring that catches slowdowns before Google does
Uptura tracks Core Web Vitals — LCP, CLS, and TBT — on every page with Google PageSpeed Insights, and alerts your team the moment a deploy pushes performance past a healthy threshold. No more finding out from a ranking drop.
or try the free Core Web Vitals Test — no sign-up required
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PageSpeed Insights · mobile
Why it matters
Slow pages cost rankings and revenue — quietly
Performance rarely breaks all at once. It drifts, one deploy at a time, until a page fails Core Web Vitals and search traffic slips. Continuous website performance monitoring catches the regression the day it ships, not the quarter it costs you.
Rankings
ride on page speed
Core Web Vitals are part of Google's page experience signals. A slow LCP or shifting layout can quietly hold a page back in search.
One deploy
can undo months of work
A single heavy script or unsized image ships, and performance regresses. Without monitoring, nobody notices until traffic dips.
Mobile first
is how Google ranks
Google scores mobile performance first, and a fast desktop hides a slow phone. Uptura measures both form factors with PageSpeed Insights, so a mobile regression can't slip by.
What we measure
Everything a website performance monitoring tool should do
Uptura tracks the Core Web Vitals Google ranks on, the load-time metrics behind them, and the regressions that quietly ship — measured with Google PageSpeed Insights on both mobile and desktop.
LCP, CLS & TBT tracking
Track the Core Web Vitals — Largest Contentful Paint, Cumulative Layout Shift, and Total Blocking Time (the lab stand-in for INP) — for every page, scored against Google's own good / needs-improvement / poor thresholds.
Straight from PageSpeed Insights
Every page is measured with Google PageSpeed Insights — the same engine behind pagespeed.web.dev — so your scores match what Google and Search Console report, not a different number from a different tool.
Regression alerts on every deploy
Uptura remembers each page's baseline and alerts you the moment a release pushes LCP, CLS, or TBT into a worse band — so a heavy new script never quietly tanks your speed.
Mobile & desktop, side by side
Google ranks on mobile performance, but your team browses on desktop. Uptura measures both form factors separately so a fast desktop never hides a slow phone experience.
The metrics behind the score
Go beyond the headline score with Time to First Byte, First Contentful Paint, and Speed Index — the metrics that explain why a page is slow, not just that it is.
Historical trends & change log
Watch each metric move over days and weeks, not just today — with a performance-score trend and a log of exactly what changed, so you can prove a page got faster or catch it drifting the wrong way.
How it works
Add a page, watch its vitals over time
Core Web Vitals monitoring should take a minute to set up. Point Uptura at your pages and it measures and tracks them from there.
- 1
Add the pages that matter
Point Uptura at your homepage, product pages, and any route where speed drives revenue. No agents or code changes needed to get a baseline.
- 2
We measure it with PageSpeed Insights
Uptura tests each page on a schedule using Google PageSpeed Insights — mobile and desktop — capturing your Core Web Vitals plus the load-time metrics behind them.
- 3
You get alerted when a vital regresses
When a deploy or a third-party script pushes LCP, CLS, or TBT into a worse band, your team is notified — with the page and the offending metric attached.
One platform
Core Web Vitals are just one signal Uptura watches
A page can be fast while its certificate is expiring, its DNS is wrong, or its checkout is broken. Uptura pairs Core Web Vitals monitoring with uptime, SSL, DNS, SEO, accessibility, and more — so every part of a website's health lives in one dashboard and one alert stream.
Uptime Monitoring
Around-the-clock scheduled checks catch outages the instant they happen — before your customers do.
SSL & Domain
Track SSL certificate, issuer, and domain expiry across every site, with alerts well before anything lapses.
DNS Monitoring
Watch DNS records for unexpected changes, hijacks, and misconfigurations in real time.
API & Endpoint
Test REST endpoints for status codes, latency, and JSON validity — and watch business-critical endpoints separately.
SEO Monitoring
Catch metadata, canonical, robots.txt, and sitemap regressions that quietly tank rankings — the moment they ship.
Synthetic & Forms
Run scripted checks on logins, checkouts, and contact forms so broken user journeys never go unnoticed.
Visual Regression
Capture daily screenshots and highlight visual differences between deployments before anyone else spots them.
Accessibility
Continuous WCAG and Axe scans with historical reports, so accessibility regressions get caught — not shipped.
Plus everything else that keeps a website healthy
- Domain & WHOIS monitoring
- robots.txt monitoring
- Sitemap monitoring
- Broken link scanner
- Lighthouse scans
- Screenshot diffing
- Deployment comparison
- Email & Slack alerts
- Daily digests & PDF reports
FAQ
Core Web Vitals monitoring, answered
What is Core Web Vitals monitoring?
Core Web Vitals monitoring is the practice of continuously measuring the metrics Google uses to score page experience — Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP) — and alerting you when a page slips past a healthy threshold. Unlike a one-off speed test, monitoring catches slowdowns that creep in after a deploy or a new third-party script.
What are good Core Web Vitals scores?
Google considers a page 'good' when LCP is 2.5 seconds or faster, CLS is 0.1 or lower, and INP is 200 milliseconds or faster. Uptura measures each page with Google PageSpeed Insights and scores LCP, CLS, and Total Blocking Time — the lab stand-in for INP — against Google's exact good / needs-improvement / poor thresholds, so you always know which pages pass and which need work.
How do I check or test my Core Web Vitals?
You can run a one-off Core Web Vitals test with tools like PageSpeed Insights, but a single test only shows this moment. Uptura runs that same PageSpeed Insights measurement continuously on a schedule, keeps the history, and tells you the instant a score regresses — so you're not re-testing by hand after every release.
What's the difference between lab and field (real-user) data?
Lab data comes from a controlled, single-environment test — it's reproducible, which makes it ideal for debugging and for catching regressions between releases. Field data reflects what real visitors experience across their devices and networks, and is what Google ultimately ranks on. Uptura measures lab data via Google PageSpeed Insights — the same lab report you see in PageSpeed Insights and Lighthouse — so your monitored scores line up exactly with Google's own tool.
Do Core Web Vitals affect SEO and Google rankings?
Yes. Core Web Vitals are part of Google's page experience signals, so poor LCP, CLS, or INP can hold a page back — especially on mobile, where Google ranks first. Monitoring them means a performance regression never quietly costs you rankings. Uptura pairs Core Web Vitals monitoring with SEO monitoring so content and speed issues surface in the same place.
Is there a free website performance monitoring tool?
Free tools like PageSpeed Insights give you a snapshot, but continuous monitoring, history, and regression alerts are what stop slow pages before they ship. Uptura runs continuous Core Web Vitals monitoring free during our public beta — alongside uptime, SSL, DNS, SEO, API, and accessibility on one platform — create a free account to start tracking your pages.
Free tool · no sign-up
Try the Core Web Vitals Test free
Test any page's Core Web Vitals — mobile & desktop score, LCP, CLS, and more.
Catch the slowdown before your rankings do
Start free today — Core Web Vitals monitoring is live alongside uptime, SSL, DNS, and more on one platform.
Free during beta · no credit card required