Generate HTTP security headers
A handful of HTTP response headers meaningfully harden a website — telling browsers to enforce HTTPS, block clickjacking, and restrict what content can load. Remembering the exact syntax is the hard part. This generator produces the common security headers from the options you choose, ready to add to your server or CDN configuration.
How to use it
- Choose the protections you want.
- Copy the generated headers.
- Add them to your server, framework, or CDN config.
Headers worth setting
- HSTS forces browsers to use HTTPS.
- X-Frame-Options or frame-ancestors guards against clickjacking.
- Content-Security-Policy limits where scripts and resources may load from.
Questions people ask
Could these break my site? A strict Content-Security-Policy can block legitimate resources, so test in a staging environment and tighten gradually.
Is my input uploaded? No — the headers are generated in your browser.