Free SSL/TLS Certificate Expiry Checker
Check certificate expiry and chain validity to avoid downtime.
Get reminders and best practices for certificate management.
- Certificate expiry date
- Chain validity
- OCSP stapling status
"Barrion's security scanning has helped us implement best security practices efficiently, saving us countless hours."
Sarah Chen
Head of Security
"We identified and fixed critical vulnerabilities before our platform launch, saving us from potential data breaches."
Marcus Anderson
CTO
"Barrion gives us peace of mind, knowing we're notified of any security issues. Exactly what our team needed."
Oskar Nilsson
Tech Lead
Scan in three simple steps
Fast, safe, non-intrusive checks with actionable results.
Start scan
Enter your URL, and click the start scan button to begin.
Scan runs
Barrion performs passive, read-only security checks with minimal site impact.
View results
See security findings with prioritized, actionable recommendations.
What is certificate expiry?
SSL/TLS certificates have finite lifetimes. Expired certs break HTTPS, trigger browser errors, and can halt critical traffic (APIs, webhooks, payments). Proactive monitoring prevents outages.
What this checker validates
- Days until expiry and exact notAfter date
- Chain validity and common trust issues
- OCSP stapling presence (when detectable)
How to avoid expiry incidents
- Automate renewals (ACME) and alerts at 30/14/7 days
- Use short‑lived certs with auto‑rotation to reduce risk
- Test full chain in staging before rollout
Tool-specific questions
When should I renew?
Do I need OCSP stapling?
Why Choose Barrion?
Real-Time Results
Instant security analysis with detailed reports, giving you an immediate security overview
Comprehensive Checks
Multiple best-practice security checks in a single scan, for broad coverage
Actionable and Effective
Clear recommendations for fixes, helping you improve your security quickly and effectively
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