Uptime monitoring for websites & APIs.

No more broken web apps, no more broken APIs.

Cronitor's powerful monitoring engine makes it easy to cover all your public endpoints.

• Monitor any website or webpage

  Ensure that your website is available all over the world and be alerted instantly when there is downtime.

• Monitor API endpoints

  Measure the performance and correctness of your APIs with powerful JSON assertions and global response sampling.

• Monitor servers and custom ports

  Create continuous TCP or UDP uptime monitors against any port and keep an eye on your entire fleet.

• JavaScript?  No problem

  Run your monitoring checks using real Chrome browsers to test your JavaScript apps.

• Custom assertions

  Build complex tests with custom assertions on page content, response code, response time and more.

• Worldwide monitoring

  With 12 monitoring locations on 5 continents, Cronitor gives you a global view of availability and performance.

• Select your test locations

  Select up to 12 independent locations for each monitor, or go for global monitoring by default.

• Fast and reliable checks

  Run monitoring checks as often as every 30 seconds to ensure any problem is detected quickly.

• Eliminate the noise

  Nobody likes noisy alerts. Fine-tune your alert threshold by defining your failure tolerance.

• No false alarms

  Cronitor verifies downtime from multiple independent locations instantly and waits on results before triggering an alert.

• Live full-screen dashboard

  See all of your APIs, websites and servers on a simple, easy to use dashboard with live updates.

• More than just uptime monitoring

  Monitor the cron jobs, data pipelines, daemons and APIs that power your business.

Our Website Monitoring Setup Guide  and  API Monitoring Setup Guide  have step by step instructions on creating monitors.