SSL Checker
Check whether a website has a valid SSL certificate, whether HTTPS is reachable, when the certificate expires, and whether the site redirects visitors to the secure version.
See basic SSL certificate details fast.
Find simple problems before users do.
Helpful during launches, migrations, and renewals.
What this SSL checker shows
This tool gives you a quick external view of a website's SSL and HTTPS setup. It checks whether the secure version responds, whether HTTP redirects to HTTPS, and whether the certificate appears close to expiry.
That makes it useful for developers, site owners, support teams, SEO teams, and anyone maintaining a secure website.
Why it matters
SSL problems can create browser warnings, trust issues, and indexing problems, so checking them regularly is a simple but important habit.
What is SSL and why does it matter?
SSL, more accurately modern TLS, encrypts the connection between a visitor's browser and your website. It helps protect passwords, forms, payment details, and other sensitive traffic from interception.
It also affects trust. Browsers warn users when certificates are invalid or expired, and that can reduce conversions and confidence immediately.
What can go wrong with SSL?
- Expired certificate — the most common issue, which causes browser warnings.
- No HTTP to HTTPS redirect — visitors may still land on the insecure version.
- Missing HSTS — browsers are not instructed to always use HTTPS.
- Broken certificate setup — the secure endpoint may fail or not present expected details.
Frequently asked questions
How often should I check my SSL certificate?
It is smart to check before launches, after server or CDN changes, and regularly as expiry dates approach.
Will this tool tell me if my certificate is expiring soon?
Yes. It highlights when the certificate appears to be close to expiry.
Why should HTTP redirect to HTTPS?
Redirecting all visitors to HTTPS helps keep sessions secure and avoids duplicate insecure versions of the site.
What should I use next after this check?
Website Security Scanner and HTTP Header Checker are good next steps if you want a broader view.