Cybersecurity 6 min readBy DigiMetrics Hub TeamPublished
What Is an SSL Certificate and Why It Matters
SSL certificates encrypt data between browsers and servers. Learn what they do, how to check them, and why every site needs HTTPS.
An SSL certificate is a small data file that enables HTTPS — the encrypted, padlock-protected version of HTTP. Without it, anything sent between a browser and a server can be read in plain text.
What SSL Actually Does
- Encrypts data in transit so it can't be intercepted
- Verifies the server's identity to prevent impersonation
- Enables HTTP/2 and HTTP/3 for faster page loads
Check any site's SSL certificate in seconds.
Run SSL CheckerTypes of SSL Certificates
- DV (Domain Validated) — basic, automated, free via Let's Encrypt
- OV (Organization Validated) — verifies the company exists
- EV (Extended Validation) — strictest checks, used by banks
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Why It Matters for SEO
Google has used HTTPS as a ranking signal since 2014. Browsers now show 'Not Secure' warnings on plain HTTP sites — which scares away visitors and tanks your conversions.
How to Check a Certificate
- Click the padlock icon in your browser's address bar
- View the certificate details, issuer and expiry
- Or use our SSL Checker for a full report including chain validity
Get a full SSL report including expiry and chain checks.
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