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Security Headers Generator

SEO

Generate security HTTP headers including CSP, HSTS, X-Frame-Options, and more.

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Presets

CSP, HSTS, and X-Frame-Options each defend against a completely different kind of attack, CSP restricts which script sources a page will actually execute to blunt cross-site scripting, HSTS forces every connection over HTTPS to prevent a downgrade to plain HTTP, and X-Frame-Options stops a page from being embedded inside someone else's iframe to prevent clickjacking, three distinct defenses easy to conflate as one generic security setting. This tool generates the actual header syntax for each of these protections and more, ready to drop into a server config rather than assembled from scattered documentation.

See more about the Security Headers Generator

Useful for adding a Content-Security-Policy without hand-writing its directive syntax, enabling HSTS correctly on a domain that's fully moved to HTTPS, or preventing a page from being framed by an unrelated site through clickjacking.

Key features

  • Clean interface
  • Fast processing
  • No signup required
  • Works offline

Quick answers for Security Headers Generator

What output formats does it generate besides raw headers?
Four: a plain header list, an Nginx server block using add_header, an Apache .htaccess block using mod_headers, and a Next.js next.config.js headers() snippet, each with its own Copy button.
What do the built-in presets configure?
Basic Security enables X-Frame-Options, X-Content-Type-Options, X-XSS-Protection, and Referrer-Policy, Strict CSP adds a strict-dynamic Content-Security-Policy and HSTS, HSTS Preload sets a two-year max-age with the preload flag, and Full Protection turns on all eleven available headers at once.
Can I add headers that aren't in the preset list?
Yes, a Custom Headers section lets you type any header name and value and add it to the generated output alongside the toggled presets.