What does SSL/TLS certificate checker show?

Shows certificate validity, issuer, expiration date, domain coverage, SSL/TLS version, cipher suites, and chain of trust. Identifies potential security issues.

Why is my SSL certificate showing warnings?

Common issues: expired certificate, wrong domain (hostname mismatch), self-signed certificate, incomplete chain, or weak encryption. Fix by renewing or reconfiguring.

What is certificate chain?

The chain connects your certificate to a trusted root CA through intermediate certificates. Incomplete chains cause trust errors in browsers.

How often should I check my SSL certificate?

Check monthly and before expiration. Set up automated monitoring. Free certificates (Let's Encrypt) expire every 90 days and need regular renewal.

SSL Certificate Checker

Check SSL/TLS certificate validity, expiration dates, and security details instantly. Free online SSL checker for website security verification. Get detailed certificate analysis including issuer, protocol support, and security warnings.

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What is SSL Certificate Checker?

An SSL certificate checker verifies the security certificates of websites. Check validity, expiration dates, certificate chain, encryption strength, and identify potential security issues.

Key Benefits

Validity check
Expiration alerts
Chain verification
Security issues

Common Use Cases

•Security audits
•Certificate monitoring
•Troubleshooting
•Compliance

How to Check SSL Certificate

Enter domain: Type the website domain to check.
Run check: Click to analyze the SSL certificate.
Review results: See validity, issuer, and expiration.
Check issues: Review any security warnings or problems.

Key Features

Check SSL certificate status
Expiration date and countdown
Certificate chain verification
Common Name and SAN display
Issuer information
Security assessment

Frequently Asked Questions

In-depth guide

SSL Certificate Checker: Verify HTTPS & TLS Status for Any Domain

Read the full guide →

SSL Certificate Checker

SSL/TLS Information

What is SSL?

SSL (Secure Sockets Layer), now technically TLS (Transport Layer Security), is the standard technology for keeping an internet connection secure and safeguarding any sensitive data that is being sent between two systems.

Why is it important?

It prevents criminals from reading and modifying any information transferred, including potential personal details. It also builds trust with users and is a ranking factor for search engines.

How to verify manually

Look for the padlock icon in the browser address bar
Ensure the URL starts with https:// instead of http://
Click the padlock to view certificate details

Certificate Types

Domain Validated (DV)

Verifies only ownership of the domain name. Issued quickly, often automated, and suitable for blogs or personal sites.

Organization Validated (OV)

Verifies the organization's existence and domain ownership. Requires manual vetting and offers higher trust for businesses.

Extended Validation (EV)

Highest level of validation. rigorous background checks. Activates the green address bar (in older browsers) or prominent organization name.

Note: This tool performs a client-side check. For a deep analysis of the certificate chain, cipher suites, and vulnerabilities, we recommend using:

SSL Labs

About SSL Checker

This tool provides a quick and easy way to verify if a website is serving content securely over HTTPS. While browser security policies limit reading raw certificate data directly from client-side JavaScript, this tool confirms connectivity and protocol support.

Tool Capabilities

Check HTTPS availability
Verify connection security
Learn about SSL/TLS standards