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SSL Certificate Checker
Check if a website has a valid SSL/TLS certificate. View expiry date, certificate grade, issuer, and HTTPS security details. Free, instant, no sign-up.
google.com
github.com
cloudflare.com
expired (bad)
Why SSL Certificates Matter for SEO
Google has used HTTPS as a ranking signal since 2014. Websites without a valid SSL certificate are marked as "Not Secure" in Chrome, which dramatically increases bounce rates. SSL certificates also protect user data and build trust.
SSL Certificate Types
- DV (Domain Validated) — Basic, cheap, confirms domain ownership. Good for blogs.
- OV (Organization Validated) — Confirms company identity. Better for business sites.
- EV (Extended Validation) — Highest level, shows company name in browser bar. Best for e-commerce.
- Wildcard SSL — Covers a domain and all subdomains (*.example.com).
Frequently Asked Questions
Since 2020, commercial SSL certificates are valid for a maximum of 398 days (~13 months). Let's Encrypt free certificates are valid for 90 days and auto-renew if configured correctly.
Yes. Google has confirmed HTTPS as a lightweight ranking signal. More importantly, sites without SSL are flagged as "Not Secure" in Chrome, causing high bounce rates which indirectly hurt rankings.