Domain Tools
SSL Certificate Checker
Check SSL certificate validity, issuer, expiry date, and SAN coverage.
SSL Certificate Checker
Check certificate validity, issuer, expiration, and SAN coverage for a domain.
About SSL Certificate Checker
Understand what this tool checks and how to use it effectively.
What this tool does
SSL Certificate Checker helps you quickly inspect domain-level signals without installing software. It’s designed for fast checks during audits and troubleshooting.
Why it matters
Domain configuration impacts security, deliverability, and SEO. A small misconfiguration can lead to trust issues, indexing problems, or email failures.
- Spot misconfigurations early during audits.
- Confirm HTTPS, redirects, and DNS settings.
- Improve trust and technical SEO hygiene.
Common use cases
Typical use cases include:
- Website migrations and domain moves.
- Security hardening checks (SSL, DNS).
- Email authentication verification (SPF/DKIM/DMARC).
FAQ
Is this tool free to use?
Yes. It runs on SEOlust without requiring any account.
Do you store my input?
No. Inputs are processed to generate results and are not intended to be stored.
Does it work on mobile?
Yes. The layout is responsive for phones, tablets, and desktops.
Related tools
Pro tip: pair this tool with Domain Hosting Checker and DNS Records Finder for a faster SEO workflow.