Free Certificate Management Tool
Never let your SSL certificates expire again – Professional certificate monitoring tool
Monitor SSL/TLS certificate expiration dates, receive timely alerts before certificates expire, and manage multiple domains from one dashboard. Perfect solution for system administrators, small businesses, and SaaS providers.
Certificate Monitoring Features
Complete solution for SSL/TLS certificate expiration monitoring
Free SSL Certificate Management Tool
Monitor expiration dates, receive timely alerts, and manage all your certificates — no cost, no credit card required.
SSL Certificate Expiry Monitoring
Track certificate expiration dates in real-time. Receive email notifications and webhooks well in advance before your SSL certificates expire.
Multi-Domain Certificate Management
Monitor SSL certificates for all your domains and subdomains from one panel. Support for wildcard certificates and multi-domain certificates (SAN).
Integration with Popular Servers
Seamless integration with Nginx, Apache, HAProxy, and other popular web servers. Easy deployment and configuration for certificate monitoring.
Flexible Expiration Notifications
Configure email and webhook notifications for certificate expiration according to your needs. Choose days before expiration when you want to receive alerts.
Public Certificate Links
Share certificate information with clients and team through secure, public links. Full control over visibility of certificate details.
Why Monitor SSL Certificate Expiration?
Benefits of proactive certificate expiry tracking
Prevent Downtime
Automated monitoring eliminates the risk of expired certificates causing website downtime. Get advance warnings and keep your sites running smoothly.
Enhanced Security
Avoid security vulnerabilities and browser warnings related to expired SSL certificates. Maintain trust with your users and customers.
Ease of Use
Intuitive interface and easy configuration. Monitor certificate expiration without specialized technical knowledge.
Scalability
From a few to hundreds of domains — the system grows with your business. Monitor all your SSL certificates in one place.
How Certificate Expiration Tracking Works
Start monitoring in under 2 minutes
Register
Create a free account in seconds. No credit card required.
Add Domains
Enter domains you want to monitor. The system automatically fetches certificate information.
Set Up Alerts
Configure when you want to receive notifications: 30, 14, 7, or 1 day before expiration.
Relax
The system monitors certificates and sends notifications. Focus on more important tasks.
Certificate Monitoring Use Cases
CrtMgr in Practice
Small Business
A small business owner with several websites can easily monitor SSL certificate expiration dates without hiring a specialist. Automatic notifications ensure no certificate expires unnoticed.
SaaS Provider
A SaaS company handling dozens of subdomains for clients uses CrtMgr to centrally monitor wildcard certificates and track their expiration dates in one place.
System Administrator
An administrator managing infrastructure for multiple projects uses CrtMgr to track certificate expiration across different servers and receive alerts before certificates expire, avoiding unplanned downtime.
Learn More About SSL/TLS Certificates
Check out our blog for expert insights on SSL/TLS certificate management, best practices, and tutorials.
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Examples in Practice
See how SSL Manager works
Main Dashboard
● example.com
Issuer: Let’s Encrypt
Expires: 2025-03-15
98 days left
● api.example.com
Issuer: DigiCert
Expires: 2025-01-02
25 days left
● *.example.org
Issuer: Let’s Encrypt
Expires: 2025-04-20
134 days left
Frequently Asked Questions
What is CrtMgr and what does it do?
CrtMgr is a free SSL/TLS certificate monitoring and management platform. It automatically tracks expiration dates across all your domains, sends email and webhook alerts before certificates expire, and lets you manage wildcard, SAN, and manually uploaded certificates — all from one dashboard. No credit card required to get started.
Is CrtMgr free to use?
Yes. CrtMgr is completely free. You can register an account, add up to 10 domains, configure expiration alerts, and access all core monitoring features at no cost. No hidden fees, no credit card required.
What types of SSL certificates can CrtMgr monitor?
CrtMgr monitors any publicly accessible SSL/TLS certificate — including those issued by Let’s Encrypt, ZeroSSL, DigiCert, Comodo, and other Certificate Authorities. It fully supports wildcard certificates (e.g., *.example.com) and multi-domain SAN certificates. You can also manually upload your own .crt, .pem, or .cer files to track private or internal certificates.
How do expiration alerts work in CrtMgr?
You choose exactly when to receive notifications — for example, 30, 7, and 1 day before a certificate expires. CrtMgr sends email alerts and optionally webhook notifications (to Slack, PagerDuty, or any HTTP endpoint). Certificates are automatically scanned once per day, and you can trigger a manual scan at any time from the dashboard.
Can I monitor certificates across dev, staging, and production environments?
Yes. CrtMgr lets you add domains from any environment and organize them with custom tags (e.g., prod, test, staging). This way you maintain a clear overview of certificate health across your entire infrastructure from a single panel.
Can I share certificate details with clients or my team?
Yes. Each monitored domain can have a public link (a stable URL) or a private shareable link (with a regenerable token). You control exactly what is visible and to whom — useful for sharing certificate status with clients, auditors, or teammates without giving them dashboard access.
Is my data secure with CrtMgr?
Absolutely. CrtMgr only reads publicly available SSL/TLS certificate information — the same data visible to any internet user via a standard TLS handshake. Your private keys are never accessed or stored. All account data and monitoring settings are encrypted in a secure database, and you retain full control over your certificates and preferences.
Ready to Start Monitoring?
Join users who never miss certificate expiration dates