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SSL & Domain Monitor
Catch expiring certificates and domains before your visitors do.
Self-hosted dashboard for HTTPS uptime, TLS certificate expiry and domain registration expiry, with alerts.
Highlights
What SSL & Domain Monitor does
Uptime checks
HTTPS availability, response time and status codes.
Certificate expiry
TLS certificate validity and days left, for every endpoint.
Domain expiry
Registration expiry looked up through RDAP.
Alerts and safety
Email, Telegram and webhook alerts, checks every 15 minutes, and private-network blocking for outbound checks.
Certificates renew automatically until the day they don't, and domains lapse when a card on file expires. SSL & Domain Monitor watches your public endpoints and tells you early, so an expiry never becomes an outage.
One dashboard for three kinds of expiry
- Availability: HTTPS status codes and response times.
- Certificates: TLS validity and the days left before renewal.
- Domains: registration expiry through RDAP.
Alerts go out by email, Telegram or webhook. Outbound checks block private network addresses, so the monitor cannot be used to probe your internal network.
What you receive
The complete TypeScript source (Express, SQLite), Docker Compose files, a protected admin dashboard, environment examples and setup documentation.
Screenshots
See it in action
Try before you buy
Open the SSL & Domain Monitor demo
Sample data only. Nothing you do there affects anyone else.
FAQ
Questions about SSL & Domain Monitor
Anything else? Email hello@bytechap.com.
How often are sites checked?
Every 15 minutes by default.
How is domain expiry found?
Through RDAP, the modern replacement for WHOIS.
What do I need to run it?
Docker Compose, or Node.js 20+ directly. Data is stored in SQLite.
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