FixHeaders is a free online tool for checking your website's HTTP security headers. It's simple — enter your URL and within seconds you'll get a clear report: which headers are configured correctly, which are missing, and what needs to be fixed to reach the green zone of protection.
Why You Should Check Your Security Headers
Misconfigured security headers are one of the most common yet easily fixable vulnerabilities. Many website owners don't even realize their site is exposed to XSS attacks, clickjacking, or content spoofing simply because the necessary headers aren't set on the server.
The FixHeaders scanner helps you identify this. We check key headers — Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, and others — and provide specific recommendations on how to configure them.
Who Will Find This Useful
Web developers, DevOps engineers, website owners, and anyone who wants to make sure their site is protected at a fundamental level. The best part — you don't need to dig through specifications or read tons of documentation. We explain everything in plain language, with minimal heavy terminology and quick recommendations on what to do and how to do it to secure your headers.