Website Uptime Monitor: Know the Moment Your Site Goes Down

A website uptime monitor is a service that checks your site at fixed intervals and alerts you when it stops responding. This one checks as often as every 30 seconds, verifies each failure from a second location, and alerts by email, Slack, Teams, Discord or webhook.

Every 5 minutes on the Free plan, every minute on Personal, and every 30 seconds on Business and Agency. Shorter intervals catch outages faster: at 30 seconds, most downtime is detected before a visitor ever sees it. HTTP monitors shows how to pick the interval.

When a check fails, a second location re-tests your site within seconds. If both fail, alerts go out on your chosen channels, at once with the default settings. Each alert names the cause, such as HTTP 503 or a timeout, and the time the outage started. A recovery notice follows when the site returns. Alert channels covers each channel.

Every failure is confirmed from a second, independent location before any alert fires. A network problem between one checking server and your site affects one location, not both. Two more guards hold alerts back when our own checker or the second location has trouble. These rules filter out most false alarms. A firewall that blocks checkers at both locations can still look like downtime. How downtime is confirmed walks through every step.

Heartbeat monitoring watches jobs that should run on schedule, like backups or wp-cron. The job pings a unique URL each time it runs. If a ping is missed, you get an alert. A ready WordPress snippet sets this up in one paste.

Yes. Warnings go out 30, 14 and 7 days before an SSL certificate expires, and 30 and 7 days before your domain registration runs out. Expired certificates cause full outages with browser security warnings, so early notice matters.

Yes. A status page groups the monitors you pick and shows live status, uptime percentage and incident history. Free includes one status page, and paid plans include more. On Pro Business and Pro Agency the page can run on your own domain. Pro Agency adds your branding, so clients see your agency's name. Status pages shows how to publish one.

Yes, with heartbeat monitoring. Add the provided one-line snippet to your site or paste it into a code-snippets plugin. Every wp-cron run then pings the monitor, and you get an alert the first time a run is missed.

Uptime monitoring is the automatic checking of a website at fixed intervals to confirm it loads correctly. A monitor requests your site the way a visitor would, records the response, and alerts you when the site stops answering. Intervals here run from every 5 minutes on Free to every 30 seconds.

It is decent, not great. The math: 99.9% uptime still allows up to 8.8 hours of downtime per year. 99.99% allows about 53 minutes. A monitor tells you which one you actually get, because a host's promise and a year of real checks often disagree.

The best uptime monitoring tool depends on how fast you need to know. Enterprise-grade 30-second checks usually cost $50 a month and up elsewhere. Here they come with the Business plan. The free plan checks every 5 minutes with no card, no time limit, and commercial use allowed.

No. Uptime is a measurement: the share of time your site actually responds. An SLA, a service level agreement, is a promise: the uptime a provider commits to and what happens if they miss it. A monitor gives you the numbers to check that promise.

Within one check interval plus a few seconds for confirmation. That means about 5 minutes on Free, 1 minute on Personal, and 30 seconds on Business and Agency. The second-location re-test adds seconds. A higher Alert after setting waits for more failed checks in a row before the alert goes out. Uptime Monitor overview and plan limits lists every plan.