Free SSL Certificate Checker — in plain English.
Real TLS handshake. Critical issues highlighted in red. Exact fix commands. PDF reports. Faster than Qualys SSL Labs.
Performing TLS handshake & analyzing certificate…
Usually 5–15 seconds. We probe TLS 1.0 → 1.3 individually.
Could not check this site
AI Summary
A plain-English overview of this report, written for non-experts.
Free • Runs locally on Techclick servers • ~10 seconds
Reading the report and writing your summary…
How the connection was secured
When a visitor's browser connects, your server and the browser pick an encryption method together. Here's what they agreed on right now.
Encryption versions allowed
TLS 1.2 and 1.3 are safe. TLS 1.0 and 1.1 are old and should be turned off.
Certificate details
Think of this as your website's digital ID card. Browsers read it to confirm visitors are talking to the real you, not an imposter.
How browsers verify your site
Browsers don't trust your certificate directly — they follow a "chain" up to a Root Authority they already know. Each step is a vouch from a higher authority.
Extra browser protections
SSL encrypts the connection. These extra HTTP headers tell browsers how to handle your site safely (block iframe attacks, force HTTPS, etc.). All of them are easy to add.
How SSL Doctor works
No signup. Real handshakes. Honest grades.
Real TLS handshake
We connect to your domain like a browser would, and capture the actual cert and cipher.
Multi-version probe
We test TLS 1.0, 1.1, 1.2, and 1.3 individually and check security headers.
Plain-English fixes
Every issue includes the exact command or config snippet to fix it.
Frequently asked questions
What is an SSL certificate? ▾
An SSL/TLS certificate is a small digital file that proves a website's identity and lets the browser create an encrypted connection. Without a valid certificate the browser shows a "Not Secure" warning to every visitor.
How do I fix an expired SSL certificate? ▾
Renew it. If you use Let's Encrypt: sudo certbot renew on the server, then reload nginx/apache. If you use a paid CA, log into their dashboard, reissue the certificate, install the new files, and reload your web server.
What is HSTS and do I need it? ▾
HSTS (HTTP Strict Transport Security) forces browsers to only use HTTPS for your domain, blocking SSL-stripping attacks. Yes — enable it. Add this header: Strict-Transport-Security: max-age=31536000; includeSubDomains
TLS 1.2 vs TLS 1.3 — what's the difference? ▾
TLS 1.3 is faster (one round-trip instead of two), simpler, and removes legacy weak cryptography. You should support both 1.2 and 1.3 today and disable 1.0/1.1.
Is SSL Doctor better than Qualys SSL Labs? ▾
SSL Doctor is faster (5–15 seconds vs 2+ minutes), gives plain-English explanations and exact fix commands, supports a one-click PDF report, and works on mobile. Qualys SSL Labs is more comprehensive on cipher-suite enumeration but is slow and technical. Use both — they complement each other.
How often should I renew my SSL certificate? ▾
Let's Encrypt certs are valid for 90 days and renew automatically every ~60 days. Paid certs are valid 1 year (or 90 days from 2024 onwards). Set up auto-renewal — never rely on calendar reminders.
Need help fixing your SSL setup?
Techclick Infosec has trained 1000+ network security engineers across India. We do enterprise SSL audits, cert lifecycle, HSTS roll-outs, and PCI compliance work.
