Free Online SSL Checker

Verify the SSL/TLS certificate status of any domain. Enter a domain name to check its HTTPS security configuration and get links to detailed analysis.

What Is an SSL Certificate?

An SSL certificate authenticates a website's identity and enables encrypted connections. When you see HTTPS and a padlock icon, the site has a valid SSL certificate. Modern implementations use TLS (Transport Layer Security).

Why SSL Certificates Matter

SSL protects data in transit, is a Google ranking signal, and prevents browsers from marking your site as Not Secure. It also prevents man-in-the-middle attacks.

Types of SSL Certificates

Domain Validated (DV) certificates are simplest, often free from Let's Encrypt. Organization Validated (OV) verify the business. Extended Validation (EV) require thorough verification. All provide the same encryption level.

Related Tools

Frequently Asked Questions

Why can't this tool directly check SSL details?
Browser-based tools cannot inspect SSL certificates of external domains due to CORS restrictions. This tool provides links to trusted external SSL analysis services.
How do I get a free SSL certificate?
Let's Encrypt provides free Domain Validated SSL certificates trusted by all major browsers. Most hosting providers offer one-click integration.
How often should I check my SSL certificate?
Check before expiry. Let's Encrypt certificates expire every 90 days with auto-renewal. Set up monitoring alerts for expiry.
What does an SSL grade of A mean?
SSL Labs grades range from A+ to F based on protocol support, key exchange, cipher strength, and vulnerabilities. A grade means strong encryption with no critical issues.
Does SSL affect SEO?
Yes. Google has confirmed HTTPS is a ranking signal. Browsers also mark HTTP sites as Not Secure, damaging user trust.

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