Tech Update | In today’s digital world, website security is essential for protecting user data and maintaining trust. One of the most important aspects of website security is the SSL certificate. But how do you know if your SSL certificate is working properly?
In this guide, we’ll explain how to check an SSL certificate, why it matters, and the best methods to ensure your website is secure and SEO-friendly.
What is an SSL Certificate?
An SSL (Secure Sockets Layer) certificate encrypts data exchanged between a user’s browser and your website. It ensures that sensitive information such as passwords, credit card details, and personal data remains secure.
When a website has SSL:
- The URL starts with HTTPS
- A padlock icon appears in the browser
- Users feel safe browsing the site
Why Checking Your SSL Certificate is Important
Regularly checking your SSL certificate helps you:
- Ensure your website is secure
- Avoid browser security warnings
- Maintain SEO rankings
- Prevent downtime due to expired certificates
- Build trust with visitors
How to Check SSL Certificate
Here are the most effective ways to check your SSL certificate:
1. Check SSL via Browser
The easiest way to verify SSL is through your browser:
Steps:
- Visit your website
- Look for the padlock icon in the address bar
- Click on the padlock
- View certificate details (issuer, validity, etc.)
What to Check:
- Certificate validity period
- Issuer name
- Domain name match
2. Use Online SSL Checker Tools
Several free tools allow you to check SSL certificates instantly.
Popular SSL Checker Tools:
- SSL Labs by Qualys
- SSL Checker
- Why No Padlock
Benefits:
- Detailed reports
- Security grading
- Detection of vulnerabilities
3. Check SSL Expiry Date
SSL certificates have an expiration date (usually 1 year or less).
How to Check:
- Click the padlock icon
- View certificate details
- Note the expiration date
👉 Always renew your SSL before it expires to avoid security warnings.
4. Verify HTTPS Redirection
Ensure your website redirects from HTTP to HTTPS.
Test:
- Type
http://yourdomain.com - It should automatically redirect to
https://yourdomain.com
If not, your SSL is not fully configured.
5. Check SSL Configuration
Proper SSL configuration ensures maximum security.
Things to Verify:
- TLS version (use TLS 1.2 or 1.3)
- No mixed content errors
- Strong encryption algorithms
6. Use Command Line (Advanced Users)
Developers can check SSL via command line:
openssl s_client -connect yourdomain.com:443
This provides detailed certificate and encryption information.
Common SSL Issues to Watch For
When checking your SSL certificate, look out for these problems:
- Expired Certificate – Causes browser warnings
- Domain Mismatch – Certificate doesn’t match your domain
- Mixed Content – Some resources load over HTTP
- Weak Encryption – Outdated security protocols
How SSL Affects SEO
SSL is a confirmed ranking factor in search engines.
Benefits include:
- Higher search rankings
- Increased organic traffic
- Better user experience
- Lower bounce rates
A properly configured SSL certificate helps improve your website’s overall SEO performance.
Best Practices for SSL Monitoring
To keep your website secure:
- Regularly check your SSL certificate
- Set up renewal reminders
- Use automated SSL renewal (if available)
- Monitor for security vulnerabilities
- Keep your server updated
Tools to Monitor SSL Certificates
You can automate SSL monitoring using tools like:
- SSL monitoring services
- Website uptime monitoring tools
- Hosting dashboards
These tools alert you before your SSL expires.
