✔UptimeFlare

A more advanced, serverless, and free uptime monitoring & status page solution, powered by Cloudflare Workers, complete with a user-friendly interface.

📢 [SECURITY ADVISORY 2026/03/04] A vulnerability (CVE-2026-29779) that could expose monitor configuration and credentials in uptime.config.ts to clients was fixed. Versions between 2025-09-21 (from commit 41257c6) and 2026-03-04 are affected. Affected users are strongly advised to upgrade to the latest version.

🎉 [UPDATE 2026/01/03] I have just migrated UptimeFlare from KV to D1 Database. I also updated the Terraform Cloudflare provider to v5 and improved the deployment process. The data structure has been optimized to resolve long-standing performance issues.

New users can deploy directly, while existing users can have a simple auto migration process (upgrade docs below)! Feel free to open an issue if you run into any trouble deploying.

⭐Features

• Open-source, easy to deploy (in under 10 minutes, no local tools required), and free
• Monitoring capabilities
  • Up to 50 checks at 1-minute intervals
  • Geo-specific checks from over 310 cities worldwide
  • Support for HTTP/HTTPS/TCP port monitoring
  • Up to 90-day uptime history and uptime percentage tracking
  • Customizable request methods, headers, and body for HTTP(s)
  • Custom status code & keyword checks for HTTP(s)
  • Downtime notification supporting 100+ notification channels
  • Customizable Webhook
  • Multi-language support (English/Chinese)
• Status page
  • Interactive ping (response time) chart for all types of monitors
  • Scheduled maintenances alerts & Incident history page
  • Responsive UI that adapts to your system theme
  • Customizable status page
  • Use your own domain with CNAME
  • Optional password authentication (private status page)
  • JSON API for fetching realtime status data

👀Demo

My status page (Online demo): https://uptimeflare.pages.dev/

Some screenshots:

⚡Quickstart / 📄Documentation

Please refer to Wiki

🚀Upgrade existing deployments

Get the latest features right away with simple upgrade process

⚙️Docs for developer

To contribute new features or customize your deployment furthermore, see here.

New features (TODOs)

• Specify region for monitors
• TCP opened promise
• Use apprise to support various notification channels
• Telegram example
• Bark example
• Email notification via Cloudflare Email Workers
• Improve docs by providing simple examples
• Notification grace period
• SSL certificate checks
• Self-host Dockerfile
• Incident history
• Improve checkLocationWorkerRoute and fix possible proxy failed
• Groups
• Remove old incidents
• Known issue: fetch doesn't support non-standard port (resolved after CF update)
• Compatibility date update
• Scheduled Maintenance
• Add docs for dev
• Migration to Terraform Cloudflare provider version 5.x
• Cloudflare D1 database
• Scheduled maintenances (via IIFE)
• Simpler config example
• Upcoming maintenances
• Universal Webhook upgrade
• i18n...? (maybe)
• ICMP via proxy?
• Add default UA
• Customizable footer
• New header logo
• Improve CPU time usage
• Local deployment (docs WIP)