What Is an SSL Checker?
An SSL Checker examines the TLS certificate presented by a public website over HTTPS. It can help website owners confirm that a certificate is available and review its basic validity information.
What Does This SSL Checker Check?
- Whether a secure TLS connection can be established on port 443
- Certificate validity dates
- Certificate hostname matching
- Certificate subject and issuer information
- Remaining certificate validity period
- The negotiated TLS protocol when available
Why Is an SSL Certificate Important?
HTTPS uses TLS to protect data exchanged between a browser and a website. A valid certificate helps a browser establish a trusted encrypted connection for the website hostname.
How to Use the SSL Checker
Enter a public website URL and click Check SSL. Toolveta connects to the website's HTTPS service and displays certificate information returned by the server.
What Does an Expired Certificate Mean?
An expired certificate is outside its configured validity period. Browsers can show security warnings when a certificate is expired, invalid for the hostname, or otherwise cannot be trusted.
Important Note
This tool checks the certificate presented by the public HTTPS server from Toolveta's server environment. Network configuration, firewalls, certificate chains and server differences can affect the result.