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If your TLS/SSL certificate is invalid, your visitors will get an annoying warning message and will not be able to access your site. Use our free tool to find out whether your connection is still secure.
An SSL/TLS certificate (also called HTTPS certificate) proves that the connection between your web server and your web browser is secured by a required layer of encryption. But an TLS/SSL certificate has an expiry date or can be revoked remotely. If you do not renew your certificate in time, your visitors will be informed that the connection is not secure, and they will not be able to access your website.
With our free HTTPS/SSL certificate checker, you can find out whether your certificate is still valid. Just enter your URL and you get the results in seconds. You will receive the name of the certificate authority and the number of days until the expiration date.
The expiry date is not the only thing to keep an eye on. There is a validation chain that runs from your domain certificate up to the root certificate, also known as Certificate Authority (CA). Any error or expired element in that chain can cause your TLS/SSL certificate to fail. If there is an issue with the validation chain, you will see it in the test results.
Even if your certificate expiry date has not yet been reached, your TLS/SSL Certificate can be revoked for other reasons. Semonto double-checks with the Online Certificate Status Protocol (OCSP) to make sure that your certificate has not been revoked and that your SSL Chain is valid at all times.
We will run the HTTPS/SSL test from 4 different monitoring locations: New York, San Francisco, Frankfurt and Amsterdam. This is important because your website might be hosted on multiple servers on different locations, for example through a geo-optimised CDN. Then the content will run on the server location that is closest to the end user, to give your users the best possible experience. A different server means a different configuration and possibly a different SSL certificate. By testing your website via multiple locations, we test your multiple servers and double-check whether all used TLS/SSL Certificates are OK.
Our monitoring tool Semonto keeps an eye on your website 24/7 and lets you know in advance when your TLS/SSL certificate is about to expire so that you can renew it in time. Why not give it a try? We have a 30-day free trial period. No strings attached. No credit card required. Get started for free.
Do a quick test from multiple locations worldwide with our free reachability checker.
Try our reachability tool →Let us crawl your website for mixed content and receive a free report.
Scan for mixed content →Our monitoring tool Semonto checks the validity of your TLS/SSL certificate 24/7 and alerts you when there is a problem. This gives you the opportunity to renew your HTTPS certificate well in advance and avoid embarrassing security warnings.
Find out more →Semonto alerts you when something is wrong with your website, app or server so you can fix the issue before anyone notices. HTTPS monitoring is just one of the options. Discover the features that help you stay in control.
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