Fast Sites Win More Customers
Monitor your website's performance in real-time. Track Core Web Vitals, page load times, and identify bottlenecks before they hurt your rankings.
Performance Score
Monitor Core Web Vitals
Google uses Core Web Vitals as ranking factors. Stay ahead with continuous monitoring.
LCP
Largest Contentful Paint
Measures loading performance. Should occur within 2.5s of page start.
FID
First Input Delay
Measures interactivity. Should be less than 100ms for good UX.
CLS
Cumulative Layout Shift
Measures visual stability. Should maintain a score less than 0.1.
Comprehensive Performance Tracking
Load Time Tracking
Monitor total page load time, TTFB, and identify slow-loading resources.
Global Testing
Test from multiple locations to understand performance for all users.
Performance Trends
Track performance over time and identify degradation before users complain.
Performance Alerts
Get notified when load times exceed thresholds or vitals score drops.
Resource Analysis
Identify large images, slow scripts, and other performance bottlenecks.
Recommendations
Get actionable insights to improve your website's performance.
Why Page Speed Matters
53% Bounce Rate Increase
Mobile users abandon sites that take longer than 3 seconds to load. Every 100ms delay costs you visitors.
Better SEO Rankings
Google uses page speed as a ranking factor. Faster sites rank higher and get more organic traffic.
Higher Conversion Rates
A 1-second delay in page load time can reduce conversions by 7%. Faster sites convert better.
Improved User Experience
Fast sites provide better user experience, leading to higher engagement, more page views, and better brand perception.
AlertSleep vs. Manual Performance Testing
One-time checks don't catch regressions. See why continuous monitoring beats manual tools.
| Feature | AlertSleep | Google PageSpeed | GTmetrix |
|---|---|---|---|
| 24/7 continuous monitoring | ✓ | ✗ manual | Paid only |
| Instant slowdown alerts | ✓ email, SMS, Slack | ✗ | Paid only |
| TTFB tracking over time | ✓ | ✗ | ✓ |
| Combined with uptime monitoring | ✓ | ✗ | ✗ |
| Free plan | ✓ $0 / mo | ✓ free | Limited free |
Frequently Asked Questions
What is website performance monitoring?
Website performance monitoring measures how fast your pages load continuously, not just on demand. AlertSleep tracks key metrics including Time to First Byte (TTFB), First Contentful Paint (FCP), Largest Contentful Paint (LCP), and total page load time — and alerts you when they degrade.
What are Core Web Vitals and why do they matter for SEO?
Core Web Vitals are Google's page experience signals: LCP (loading speed), INP (interactivity), and CLS (visual stability). Google uses these as ranking factors, so poor Core Web Vitals can hurt your organic search rankings and reduce traffic.
How often does AlertSleep check page speed?
AlertSleep checks your page performance at configurable intervals — every 1 minute on paid plans, every 5 minutes on the free plan. You'll be alerted when response times exceed your configured thresholds.
What is TTFB and how does it affect performance?
Time to First Byte (TTFB) measures how long it takes your server to respond to the first byte of a request. High TTFB (above 600ms) indicates server-side issues like slow database queries, insufficient server resources, or poor CDN configuration.
Can I get alerts when my website slows down?
Yes. AlertSleep lets you set response time thresholds. If your page takes longer than your defined limit (e.g., 2 seconds) to load, you'll receive an instant alert via email, SMS, Slack, or webhook.
Start Optimizing Your Performance
Monitor, analyze, and improve your website speed with AlertSleep.
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