SSL Checker

SSL Checker | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Development
Input types: text, number, checkbox
Output type: text
Sample coverage: 4
API ready: Yes

Overview

The SSL Checker is a professional diagnostic tool designed to verify the status, validity, and security configuration of SSL/TLS certificates for any domain. It provides instant insights into certificate details, chain integrity, and server-side security headers to ensure your web traffic remains encrypted and secure.

When to use

Before deploying a new SSL certificate to ensure it is correctly installed and trusted.
When troubleshooting 'Your connection is not private' errors or browser security warnings.
During routine security audits to verify that your server uses modern encryption standards and secure headers.

How it works

1Enter the hostname of the website you wish to analyze in the input field.
2Select optional configurations such as including the certificate chain or checking HTTP security headers.
3Click the check button to initiate a handshake with the server and retrieve the certificate data.
4Review the generated report for details on expiration, issuer, encryption strength, and security configuration.

Use cases

Validating that a newly installed SSL certificate is correctly recognized by external clients.
Monitoring certificate expiration dates to prevent unexpected site downtime.
Auditing web server configurations to ensure compliance with modern security best practices.

Examples

1. Verifying Production Certificate Status

Web Developer

Background

A developer recently renewed an SSL certificate for a production e-commerce site and wants to confirm it is active.

Problem

Need to ensure the new certificate is correctly installed and the chain is complete to avoid checkout errors.

How to use

Enter the domain name, enable 'Include Certificate Chain', and run the check.

hostname: shop.example.com, includeChain: true

Outcome

The tool confirms the new expiration date and verifies that the full certificate chain is correctly served.

2. Security Header Audit

System Administrator

Background

An administrator is hardening a web server and wants to verify that security headers are correctly implemented.

Problem

Need to confirm that HSTS and other security headers are active to protect against protocol downgrade attacks.

How to use

Enter the domain and ensure 'Check HTTP Security Headers' is toggled on.

FAQ

What information does the SSL Checker provide?

It provides the certificate's expiration date, issuer, subject, public key details, and a validation of the certificate chain.

Can I check certificates on non-standard ports?

Yes, you can specify a custom port number if your SSL/TLS service is running on a port other than the default 443.

Why is it important to check the certificate chain?

Checking the chain ensures that your server is sending all necessary intermediate certificates, preventing trust errors on mobile devices and older browsers.

Does this tool check for HTTP security headers?

Yes, when enabled, the tool scans for essential security headers like HSTS, X-Content-Type-Options, and others to verify your server's security posture.

Is the SSL Checker tool free to use?

Yes, this is a free utility tool available for unlimited use to help developers and administrators maintain secure web environments.

hostname: secure.example.com, checkHeaders: true

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Verifying Production Certificate Status

2. Security Header Audit

FAQ

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