Uptime Monitoring

Uptime monitoring is the practice of continuously checking whether a website or web service is accessible and responding correctly. SiteMonitor checks your sites every minute and alerts you instantly when something goes wrong.

How it works

01

Add your URL

Enter your URL and choose your check interval. Done in under a minute.

02

We monitor continuously

SiteMonitor checks your site every minute and alerts you when something goes wrong.

03

Get alerted instantly

If your site goes down, you get an alert within a minute via email, Slack, WhatsApp, SMS, or webhook.

What is uptime monitoring?

Uptime monitoring is the continuous process of checking whether a website, API, or web service is available and responding to requests. A monitoring service sends regular requests to your URL and tracks whether it returns the expected response. When the service detects a failure, it sends an alert so you can investigate and resolve the issue before it affects your users.

Without uptime monitoring, you rely on users to report outages. That means lost revenue, damaged trust, and slower incident response times. With SiteMonitor, you know about downtime within a minute.

What you can monitor

  • HTTP, HTTPS, TCP, and ping monitoring
  • Checks every minute
  • SSL certificate expiry monitoring
  • Custom status code and keyword validation
  • Response time tracking and performance graphs
  • Public and private status pages
  • Instant alerts via email, Slack, WhatsApp, SMS, and webhooks

Frequently asked questions

SiteMonitor checks your website every minute. This means you know about downtime quickly, often before any of your users notice.
When a check fails, SiteMonitor sends you an alert within a minute via email, Slack, WhatsApp, SMS, or webhook.
SiteMonitor runs checks from a dedicated monitoring server. Each check verifies that your site is accessible and responding correctly within the expected time.
Yes. You can monitor internal endpoints by installing a lightweight agent on your network. The agent checks private URLs and reports results back to your SiteMonitor dashboard without exposing your internal services.
SiteMonitor supports HTTP/HTTPS monitoring (with custom headers and request bodies), TCP port monitoring, ICMP ping monitoring, and DNS record monitoring. You can also validate response status codes, check for specific keywords in the response body, and monitor SSL certificate expiry dates.
SiteMonitor performs a follow-up check shortly after a failure is detected before triggering an alert. This helps eliminate false positives caused by temporary network glitches.

Ready to keep your sites online?

Set up your first monitor in under 2 minutes. No credit card required.

Start monitoring