What this tool checks
- Certificate subject
- Issuer
- Valid from and to
- Days remaining
Website Security Tools
SSL Checker
Inspect the TLS certificate served on port 443.
Run the check
Enter a public target. Checks are a point-in-time sample; private and internal addresses are blocked.
Why it matters
SSL certificates protect visitors and prevent browser security warnings.
Plain-English examples
- Check whether a certificate expires soon
Recommended fixes
- Renew expiring certificates early
- Use HTTPS redirects after installation
Understanding the result
Use findings as a starting point, confirm the intended configuration with your provider, and retest after a change. A successful check does not guarantee security, delivery, uptime or search rankings. Results depend on public DNS and what the server exposes at the time of the check.
Related tools
Run these checks next for a fuller picture.
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