Monitor your websites around the clock, detect downtime, track response times, and receive alerts when something goes wrong. Start monitoring for free.
A server crashes at night, a certificate expires, a DNS change goes wrong. Unless someone tells you, you usually find out from a customer, hours later.
People who hit an error page rarely wait. They go back to the search results and choose someone else.
Every minute your checkout, booking form or contact page is unreachable is a minute where nobody can buy from you.
Crawlers that repeatedly receive server errors may slow down crawling, and prolonged outages can affect how your pages are indexed.
UptimeStats checks your website automatically and tells you the moment a problem is confirmed, so you can fix it before most visitors notice.
Monitor up to 5 websites at no cost. No trial period and no credit card.
We request your page around the clock and record whether it responded and how fast.
A failed check is re-tested before we call it an outage, which keeps false alarms to a minimum.
One email when an outage is confirmed and another when your website is back. No alert storms.
See uptime percentages, daily availability and a timeline of every incident.
Charts of how quickly your server responds help you spot slowdowns before they become outages.
New to the topic? Our complete guide explains how uptime monitoring works, from check intervals to alerts.
Enter your website address and email to get started.
UptimeStats checks your website every 5 minutes and records its availability and response time.
Receive alerts when problems are confirmed and review your uptime history from one simple dashboard.
See which websites are online at a glance, when each one was last checked, the HTTP status it returned and how fast it answered.
We designed alerts to be trustworthy: a failure is confirmed before you hear about it, you get one email when the outage starts and one when it's over.
Monitoring data is stored for every check, so you can answer questions like "Was the site down last night?" or "Is it getting slower?" with facts.
Uptime %, average response time and every incident, calculated from real checks of your website.
7 days of detailed check history on the Free plan, plus daily summaries.
Check if a website is online and diagnose problems right now, with the same engine that powers our monitoring.
Is a website down for everyone or just you?
Website response time and TTFB, phase by phase.
Status codes, redirect chains and headers.
Certificate validity, issuer and expiry date.
A, AAAA, CNAME, MX, NS and TXT records.
The Free plan is fully functional today, and Pro is available for US$ 4.99 per month (R$ 24,90 in Brazil). Business is planned and clearly marked as coming soon.
Everything you need to watch a few websites.
For freelancers and small teams with more sites.
Custom limits for agencies and companies.
Practical explanations of uptime, downtime, HTTP status codes, SSL and DNS.
Uptime monitoring automatically checks your website from the outside and alerts you when it stops responding. This guide covers how it works, the types of checks, intervals, alerts, choosing a tool and setting it up.
A website can be up and still too slow to use, or fast whenever it's online but frequently down. Here's how uptime and performance differ, how each is measured and how to monitor both sensibly.
Your server can be running perfectly and visitors still can't reach it if DNS fails. Learn how DNS resolution works, the problems that cause outages, how to diagnose them and how to change records safely.
Yes. The Free plan lets you monitor up to 5 websites with checks every 5 minutes, email alerts and 7 days of detailed history at no cost. No credit card is required. If you need more, Pro monitors up to 50 websites every minute for US$ 4.99 per month (R$ 24,90 per month in Brazil).
Every 5 minutes we request your page and measure the response. A response with an HTTP 2xx or 3xx status counts as up. Errors such as timeouts, DNS failures, TLS problems or 4xx and 5xx status codes count as failures. Before we declare an outage we run a confirmation check about a minute later, which avoids alerts for one-off network blips.
No. You receive one alert when an outage is confirmed and one when your website recovers. The incident stays open in your dashboard in between.
Alerts are only useful if they reach you. Verification proves the address is yours and prevents anyone from signing up other people. Monitoring starts as soon as you confirm.
No. One lightweight request every 5 minutes is far less traffic than a single visitor. We read the response headers and at most 64 KB of the page, then close the connection.
We check publicly reachable http:// and https:// addresses. For security reasons, private, local and reserved network addresses cannot be monitored.
Add your website now. It takes less than a minute, and the Free plan covers up to 5 websites with checks every 5 minutes.
