SSL Checker

Check the SSL certificate status, validity, and details for any website instantly.

Home SSL Checker
The free SSL Checker scans a website's domain to verify the validity, expiration date, and chain integrity of its SSL certificate. Ensure your site is secure and avoid security warnings. Check your SSL certificate now!

Quick Test Examples

Click an example to instantly check its SSL certificate

SSL Certificate Checker

Enter a website URL (with or without https://) to check its SSL certificate validity and details

Understanding SSL/TLS Certificates

What is SSL/TLS?

SSL (Secure Sockets Layer) and TLS (Transport Layer Security) are cryptographic protocols that provide secure communication over the internet. They encrypt data transmitted between your browser and a web server.

Encrypts sensitive data (passwords, credit cards)
Verifies website identity and authenticity
Protects against man-in-the-middle attacks

Certificate Types

Domain Validated (DV)
Basic validation - verifies domain ownership only
Organization Validated (OV)
Verifies organization identity and domain ownership
Extended Validation (EV) Highest
Rigorous verification - shows company name in browser

Certificate Authorities

Certificate Authorities (CAs) are trusted organizations that issue SSL certificates after verifying domain/organization identity.

Popular CAs: Let's Encrypt (Free), DigiCert, GlobalSign, Sectigo, GoDaddy
Why it matters: Browsers only trust certificates from recognized CAs

Best Practices

Renew Early: Renew certificates 30 days before expiration to avoid downtime
Use Strong Keys: Minimum 2048-bit RSA keys (4096-bit recommended)
Enable HSTS: HTTP Strict Transport Security forces HTTPS connections
Monitor Expiry: Set up alerts to notify you before certificates expire
  1. 1 Enter Domain: Input the full domain name or URL of the website (e.g., `www.example.com`).
  2. 2 Run Scan: Click "Check SSL Status" to initiate the certificate inspection.
  3. 3 View Report: Instantly view the certificate's validity, expiration date, issuing authority, and chain integrity. Check your SSL certificate now!

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