observium.io checks your URLs every 5 minutes and fires instant alerts the moment something goes down - before your users even notice.
Every 5 minutes, the monitor makes a real HTTP request. If anything looks wrong, you get an email immediately.
[21:05:00] starting - 4 URLs active >> [Startseite] status=DOWN http=404 ms=312 ALERT: sending DOWN alert MAILER: SMTP → david@example.com >> [API Endpoint] status=DOWN http=0 ms=15003 ALERT: cURL: Connection timed out MAILER: SMTP → ops@example.com >> [Checkout] status=DOWN http=503 ms=891 ALERT: skipped (cooldown, 8 min ago) >> [Shop] status=UP http=200 ms=124 RECOVERY → david@example.com [21:05:04] done - up: 1 | down: 3 | alerts: 2
A clean, distraction-free monitoring tool built for developers and site owners who want reliability without complexity.
Every active URL is checked every 5 minutes via HTTP cURL. Response times are tracked to the millisecond. Full check logs give you historical insight.
When a site goes down, you get an email immediately. When it recovers, you get a recovery notice. No alert spam - smart 30-minute cooldown per URL.
Organise URLs into projects. Each project has its own health overview, status badges, response time graphs and recent check history at a glance.
Group your URLs by client, platform or purpose. Add an optional secondary email so the whole team gets notified.
Paste any URL and give it a human-friendly label. OBSERVIUM.IO handles the rest - SSL verification, redirects, timeouts.
The cron runner checks every 5 minutes. The moment a URL returns a non-2xx status or times out, an alert lands in your inbox.