HSTS Header Checker

Check if your website has HSTS enabled and properly configured. Improve security by enforcing HTTPS connections easily.

HSTS Header Checker

Check if your website has HSTS enabled and properly configured. Improve security by enforcing HTTPS connections easily.

URL

Enter a valid value or use one of the quick examples above.

Live analysis is enabled where server-side checks are available. A few tools still fall back to readiness mode when they need external network services or third-party APIs.

HSTS Header Checker

What is this tool

The HSTS Header Checker is a powerful security tool that helps you verify whether your website is using HTTP Strict Transport Security (HSTS). HSTS is a security feature that forces browsers to always load your website over HTTPS instead of HTTP, protecting users from man-in-the-middle attacks and data interception.

When HSTS is properly configured, it ensures that even if someone tries to access your site via an insecure connection, the browser will automatically switch to a secure HTTPS version. This is especially important for websites handling sensitive data such as login credentials, payment information, or personal details.

This tool allows you to quickly check if your website sends the correct HSTS header and whether it is configured correctly with parameters like max-age, includeSubDomains, and preload.

How to use this tool

Using the HSTS Header Checker is simple and requires no technical expertise:

Enter your website URL in the input field.
Click the "Check" button.
The tool will fetch your website headers.
View detailed results about your HSTS configuration.

The tool will display whether HSTS is enabled, its max-age value, and whether additional directives like includeSubDomains and preload are present.

For deeper analysis, you can also use the HTTP Headers Checker to view all headers sent by your server.

Key Features

Instant HSTS Detection: Quickly check if your website uses HSTS.
Detailed Header Analysis: View max-age, includeSubDomains, and preload directives.
Security Insights: Understand whether your configuration meets best practices.
User-Friendly Interface: No technical knowledge required.
Free and Fast: Get results instantly without any cost.

Benefits

Using the HSTS Header Checker provides several important benefits:

Enhanced Security: Protect your users from insecure connections and attacks.
Improved Trust: Visitors feel safer when your site enforces HTTPS.
SEO Advantage: Secure websites are preferred by search engines.
Better Compliance: Meet modern web security standards.
Reduced Risk: Prevent downgrade attacks and cookie hijacking.

You can also combine this tool with the Security Headers Scanner to get a complete overview of your website's security setup.

Use Cases

The HSTS Header Checker is useful for various users and scenarios:

Website Owners: Ensure your site is secure for visitors.
Developers: Validate HSTS implementation during development.
SEO Experts: Improve site trust and rankings.
Security Auditors: Perform quick security checks.
E-commerce Sites: Protect sensitive customer data.

If you're auditing your website, pairing this tool with the SSL Checker and URL Safety Checker can give you a complete security overview.

Related Tools

Helpful Resources

To learn more about website security and performance, explore these guides:

These resources will help you understand how security headers and HTTPS impact your website’s performance and ranking.

Frequently Asked Questions

HSTS (HTTP Strict Transport Security) is a security feature that forces browsers to always connect to a website using HTTPS instead of HTTP, protecting users from insecure connections.

HSTS improves website security by preventing man-in-the-middle attacks, ensuring encrypted communication, and protecting sensitive user data.

The max-age directive defines how long a browser should remember to enforce HTTPS for your website. It is measured in seconds.

The includeSubDomains directive ensures that all subdomains of your website also enforce HTTPS connections.

Yes, HSTS indirectly helps SEO by enforcing HTTPS, which is a ranking factor in search engines and improves user trust.