UptimeObserver checks your websites, APIs, and web services from multiple locations around the world. Get alerted via Slack, Discord, SMS, or email the moment your site becomes unreachable or returns unexpected status codes.
🚨 api.example.com is down. HTTP 503 Service Unavailable.
Why It Matters
Get notified within seconds of a failed HTTP request. Whether it's a 500 error, a timeout, or a complete connection failure, you'll know before your users do—on every channel that matters.
Verify your site is up from North America, Europe, and Asia-Pacific simultaneously. A CDN misconfiguration in one region won't trigger false alarms for users where everything works fine.
Track every request's response time down to the millisecond. Spot performance degradation, slow database queries, and bloated assets before they impact your conversion rates.
Quick Setup
No agents to install. No code to modify. Just add your URL and let us watch it.
Enter the full URL of the page you want to monitor—homepage, API endpoint, or checkout flow. Choose HTTP or HTTPS and set your check interval in seconds.
Define the expected HTTP status code and maximum response time. Optionally verify that specific keywords appear in the response body to catch blank pages or errors.
If the HTTP request fails, times out, or returns an unexpected status code, we alert you immediately on your preferred channel—Slack, Discord, SMS, email, and more.
Included in Every Plan
When you monitor your websites with UptimeObserver, you unlock an entire suite of enterprise-grade infrastructure monitoring.
Integrations
Keep your team in the loop by sending real-time downtime and performance alerts directly to your dedicated channels.
Send alerts directly to any Slack channel or DM.
Send notifications to any Discord server channel.
Receive instant alerts in your Telegram chat or group.
Push alerts directly to your mobile device.
POST event payloads to any endpoint in your own systems.
Get email alerts straight to your inbox on any schedule.
Connect AI assistants to your monitoring data via the Model Context Protocol.
Testimonials
Don’t just take our word for it, here’s what real users say.
“Reliable Website Monitoring with Instant Telegram Alerts.”
Florin B.
AI Engineer, Freelancer
“Easy Setup, Helpful UptimeObserver Team, and Generous Plans.”
Icaro F.
Software Engineer, Small Business
“Simple to Use with Excellent & Fast Support.”
Charlie F.
Managing Director, Small Business
Simple Pricing
14-day free trial. Cancel or change plans at any time.
Free
Perfect for getting started.
Indie
Most PopularFor indie makers and small teams.
Pro
For growing teams that need more.
FAQ
It depends on your needs! We offer flexible monitoring intervals across our plans. Our Free plan checks your site every 5 minutes, while our Indie plan ramps that up to every minute. For mission-critical sites, our Pro plan provides high-frequency monitoring every 30 seconds, ensuring you are the first to know the moment something goes wrong.
No one likes being woken up at 3 AM by a "glitch." We use Multi-Location Checking to virtually eliminate false positives. If one of our monitoring nodes detects an issue, we immediately double-check the status from other global locations. We only send an alert once the downtime is confirmed by multiple independent nodes.
Absolutely! We believe alerts should meet you where you already work. UptimeObserver integrates seamlessly with Slack, Discord, Telegram, and Pushover. You can also set up custom Webhooks for advanced workflows, or stick with classic Email and SMS notifications. You choose the channel; we’ll handle the delivery.
We hate false alarms as much as you do. To ensure 100% accuracy, UptimeObserver allows you to select multiple monitoring regions for your checks. When you have two or more regions active, we won't alert you until the downtime is confirmed across your selected locations. This ensures that a temporary local network glitch or a regional routing issue doesn't trigger a "false" notification—giving you total peace of mind.
An expired SSL certificate can be just as damaging as a site crash, as it triggers scary "Your connection is not private" warnings for your visitors. UptimeObserver doesn't just check if your site is "up"; we proactively monitor your SSL certificates and send you reminders well in advance of their expiration date, giving you plenty of time to renew.
Try UptimeObserver now. Setup in 2 minutes.