Why is SSL important for SEO?

Google has used HTTPS as a ranking signal since 2014. Sites without SSL are marked Not Secure in Chrome, which drastically reduces user trust and click-through rates.

How long are SSL certificates valid?

Since 2020, SSL certificates are valid for a maximum of 398 days (about 13 months). Lets Encrypt issues free certificates valid for 90 days with auto-renewal.

What is the difference between DV, OV, and EV certificates?

DV only verifies domain ownership. OV verifies business identity. EV shows the company name in the browser address bar and requires thorough vetting.

What happens if my SSL certificate expires?

Browsers show a security warning that blocks visitors. Google Search Console may flag the site. Rankings and traffic can drop significantly. Set up auto-renewal to prevent expiry.

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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.

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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).

よくある質問

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.

SSL Certificate Checker

Why SSL Certificates Matter for SEO

SSL Certificate Types

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SSL Certificate Checker

Why SSL Certificates Matter for SEO

SSL Certificate Types

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How often do SSL certificates expire?

Does HTTPS improve Google rankings?

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