What does Lemwatch monitor?

Lemwatch runs 20+ automated checks per site: uptime, response time, SSL/TLS expiry, domain expiry, DNS changes, sitemap health, broken links, content changes, SEO audits, mobile usability, security headers, and more.

Yes. The free tier monitors up to 5 sites. Pro is $19/month for 50 sites and Agency is $59/month for 100 sites, both with full feature access.

How is Lemwatch different from UptimeRobot or Pingdom?

Lemwatch bundles uptime, change detection, SEO audits, security scans, and a public API in one platform — features competitors charge separately for. It also includes team workspaces, white-labelled status pages, and a webhook system out of the box.

Does Lemwatch send alerts?

Yes. Lemwatch supports email, browser push, webhooks, and per-site notification routing so the right person hears about the right incident.

Is there a public API?

Yes. Pro and Agency plans get a public REST API with webhooks for sites, checks, incidents, and reports.

What are Core Web Vitals?

Core Web Vitals are a set of specific factors that Google considers important for user experience. They include LCP (Largest Contentful Paint) measuring loading performance, INP (Interaction to Next Paint) measuring interactivity, and CLS (Cumulative Layout Shift) measuring visual stability.

Why do Core Web Vitals matter for SEO?

Google uses Core Web Vitals as ranking factors. Sites with good Core Web Vitals may rank higher than similar sites with poor metrics. They're part of Google's 'page experience' signals that affect search rankings.

What's a good LCP score?

Google considers LCP good if it's under 2.5 seconds, needs improvement if between 2.5-4 seconds, and poor if over 4 seconds. Lemwatch tracks your LCP and alerts you if it crosses these thresholds.

What's the difference between FID and INP?

FID (First Input Delay) measured the delay for the first interaction, while INP (Interaction to Next Paint) measures responsiveness throughout the entire page lifecycle. Google replaced FID with INP as a Core Web Vital in March 2024.

How often does Lemwatch test Core Web Vitals?

Lemwatch runs performance tests daily by default. You can also trigger manual tests anytime, and configure more frequent automated testing based on your plan.

Do you test from real devices or synthetic?

Lemwatch uses Google PageSpeed Insights' Lighthouse testing (synthetic) combined with Chrome User Experience Report data (real user metrics) when available, giving you both lab and field data.

Can I set custom performance thresholds?

Yes! While Google has standard thresholds (good/needs improvement/poor), you can set custom alert thresholds based on your own performance goals and SLAs.

How do I improve my Core Web Vitals?

Lemwatch provides specific recommendations based on your results. Common improvements include optimizing images, reducing JavaScript, improving server response times, and avoiding layout shifts from dynamic content.

Performance Feature

The metrics Google ranks you on, watched 24/7

Lemwatch tracks LCP, INP and CLS on mobile and desktop, alerts you the moment a deploy regresses your scores, and shows historical trends so you can prove improvements to stakeholders.

The Three Core Web Vitals

Google's official metrics for measuring user experience

LCP

Largest Contentful Paint

How fast main content loads

Good: < 2.5s

INP

Interaction to Next Paint

How responsive the page feels

Good: < 200ms

CLS

Cumulative Layout Shift

Visual stability during load

Good: < 0.1

Why Core Web Vitals Matter

Impact on Rankings

• Core Web Vitals are a confirmed Google ranking factor
• Sites with good scores may outrank competitors
• Mobile-first indexing means mobile vitals are critical
• Part of Google's "page experience" update

Impact on Business

• Every 100ms of LCP improvement = 8% more conversions
• Poor CLS can cause accidental clicks and frustration
• Slow pages have 2-3x higher bounce rates
• Performance affects brand perception

How Core Web Vitals Monitoring Works

Set up in minutes, track automatically forever

Add Your Sites

Enter your URLs and Lemwatch immediately starts measuring Core Web Vitals.

Automated Testing

Regular performance checks run automatically, testing both mobile and desktop experiences.

Track & Improve

View trends, get alerts on regressions, and track your progress toward better scores.

Complete Core Web Vitals Tracking

Everything you need to monitor and improve performance

All Core Web Vitals

Track LCP, FID/INP, and CLS—the metrics Google uses to rank your site in search results.

Mobile & Desktop Testing

Separate scores for mobile and desktop. Know exactly how each experience performs.

Historical Trends

Track how your Core Web Vitals change over time. Identify regressions before they hurt rankings.

Threshold Alerts

Get notified when any metric drops below your target. Set custom thresholds per site.

Performance Budgets

Define performance budgets and get alerted when you exceed them. Stay within limits.

PageSpeed Integration

Core Web Vitals FAQ

Common questions about performance monitoring

Start Tracking Your Core Web Vitals

Join teams who use Lemwatch to maintain fast, user-friendly websites. Free plan includes Core Web Vitals monitoring.

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