SSL Certificate Check
Verify SSL certificates and website security. Check HTTPS connectivity, security headers, and certificate validity for any domain.
SSL Certificate Check
Verify HTTPS availability, security headers, and certificate health.
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Understanding SSL Certificates and Website Security
SSL keeps data encrypted in transit, builds user trust, and protects modern web experiences.
What is SSL?
SSL encrypts data between a web server and browser so sensitive information stays private.
Why SSL Matters
HTTPS protects user data, boosts trust, and avoids browser warnings for insecure sites.
Security Headers Explained
Essential Headers
- HSTS: Forces browsers to use HTTPS only
- CSP: Prevents XSS and data injection attacks
- X-Frame-Options: Prevents clickjacking attacks
Additional Security
- X-Content-Type-Options: Prevents MIME sniffing
- Referrer-Policy: Controls referrer information
- Feature-Policy: Controls browser features
How to Get an SSL Certificate
Choose Your Certificate Type
DV for basic encryption, OV for business verification, EV for maximum trust.
Get from a Certificate Authority
Use Let's Encrypt (free) or providers like DigiCert, Comodo, or GlobalSign.
Install on Your Server
Configure Apache, Nginx, or IIS and enable automatic HTTPS redirection.
Regular Monitoring
Track expiration dates and review headers with tools like this checker.
SSL Best Practices
- Always use HTTPS instead of HTTP for all websites.
- Implement security headers to protect against common attacks.
- Use strong encryption ciphers (TLS 1.3 when possible).
- Renew certificates before expiration.
- Monitor for revocation and security issues.
- Enable Certificate Transparency monitoring.