✔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:

Desktop, Light theme

⚡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)

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

UptimeFlare

Install / Use

README