Load timings on a schedule
Six timings are recorded on every run: Largest Contentful Paint, First Contentful Paint, Cumulative Layout Shift, Time to First Byte, Speed Index and Total Blocking Time.
Page Speed Monitoring
Know when your pages
Know when your pages
get slower.
Scheduled Lighthouse audits chart your scores and load timings over time, and alert you when performance drops.
Free tier included
No credit card
2-minute setup
Performance checks that run like a real user.
Every audit is a full Lighthouse run against your live URL, so it measures rendering, script execution and layout shift rather than just a ping to your server. Audits run every 6 hours against the exact URL you give us, so you can point one at your checkout or your search results rather than only at your homepage.
Deep links welcome
Audit your checkout, your search results or any page your users land on, not only the homepage.
Trend charts across releases
Every score and raw timing is stored with the time it was taken, so you can chart movement over days, weeks, or between specific deployments.
Four Lighthouse categories
Performance, Accessibility, SEO and Best Practices are each scored and charted on every run, so you can see when a change helps speed and hurts accessibility.
Alerts when performance drops
Get an alert when the Lighthouse performance score drops below 50, and another when it recovers.
Regression alerts across channels
Route score-drop alerts to Slack, Teams, email, or any webhook so the engineer who shipped the change hears about it.
Full Lighthouse audits
A real browser
A real browser
renders every audit.
Speed tools that rely on HTTP-only measurements miss JS execution, render-blocking resources, and layout shifts that define real user experience. Every audit is a full Lighthouse run, so the page renders in a real browser.
- Full browser rendering including JS execution and paint cycles
- Audit any URL: deep-link to checkout or search, not just the homepage
- Audited every 6 hours and charted over time
acme.com / checkout HealthyLIVE
LCP2.1s
CLS0.02
PERF SCORE91
LCP2100ms
FCP1050ms
TTFB420ms
TBT210ms
Speed Index1640ms
Actionable in minutes
One switch on the
One switch on the
monitor you already have.
Page speed is not a separate monitor to set up. Turn it on for an existing HTTP monitor and its alerts go to the channels that monitor already uses.
- One flag on the monitor, no second thing to configure
- Alerts route through your existing notification groups
- Every run stored, so the regression has a before and an after
add a speed audit$ curl -X POST https://api.siteqwality.com/http/job \
-H "Authorization: Bearer $SQ_TOKEN" \
-H "Content-Type: application/json" \
-d '{"uri":"https://acme.com/checkout","method":"GET","timeout_ms":10000,
"run_interval_seconds":300,"monitor_page_speed":true}'
$ curl https://api.siteqwality.com/http/job/$JOB_ID/page_speed \
-H "Authorization: Bearer $SQ_TOKEN"
✓ performance_score, lcp_ms, fcp_ms, cls, ttfb_ms, speed_index_ms
-H "Authorization: Bearer $SQ_TOKEN" \
-H "Content-Type: application/json" \
-d '{"uri":"https://acme.com/checkout","method":"GET","timeout_ms":10000,
"run_interval_seconds":300,"monitor_page_speed":true}'
$ curl https://api.siteqwality.com/http/job/$JOB_ID/page_speed \
-H "Authorization: Bearer $SQ_TOKEN"
✓ performance_score, lcp_ms, fcp_ms, cls, ttfb_ms, speed_index_ms
10
scores and timings stored on every run
4
Lighthouse categories audited: performance, accessibility, SEO, best practices
$0
free tier, no credit card needed to start
6h
between Lighthouse audits of each page
FAQ
Site Qwality runs audits on a schedule, stores every result, charts them over time and alerts you when the performance score drops. A one-off Lighthouse run tells you where you are today. Scheduled audits show you when something changes.
Ten values are stored on every run: the four Lighthouse category scores (Performance, Accessibility, SEO, Best Practices) and six timings (Largest Contentful Paint, First Contentful Paint, Cumulative Layout Shift, Time to First Byte, Speed Index and Total Blocking Time).
Page speed audits load the page as an anonymous visitor, so they suit public pages. For signed-in journeys, use browser checks.
Every 6 hours, for each page you audit.
Related features
Start free. No credit card.
Uptime, cron, synthetic, logs, RUM, incidents, and status pages. Free tier on every product.