Why SSL certificates matter
Every website that handles user data needs a valid SSL/TLS certificate. Without one, browsers display security warnings, search engines penalize your rankings, and attackers can intercept traffic.
An SSL certificate encrypts data in transit, authenticates the server, and ensures data integrity.
How to check your SSL certificate
Method 1: Use a free SSL checker tool
The fastest way is to use CQwerty Shield's free SSL Checker. It analyses your certificate in seconds and shows validity, expiry, TLS version, cipher strength, and an overall grade.
Method 2: Check in your browser
Click the padlock icon in the address bar, then "Certificate" to see the details.
Method 3: Command line
'''
openssl s_client -connect example.com:443 | openssl x509 -noout -dates
'''
What to look for
Common issues
| Issue | Fix |
|---|---|
| Expired certificate | Renew and enable auto-renewal |
| Mixed content | Update all resources to HTTPS |
| Weak ciphers | Configure modern cipher suites |
| Missing intermediate | Install the full chain |
Automate your monitoring
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