Build a Content Security Policy for your website

Create a CSP from a practical starting point, choose the resource types and origins your application needs, and see the complete policy update as you work.

The builder highlights unsafe allowances and produces deployment-ready header examples for common servers and hosting platforms. Start with Report-Only mode, observe legitimate violations, remove unnecessary sources and test the public response before enforcing the policy.

A generated policy is a starting point rather than a substitute for testing. Content Security Policy must reflect the scripts, styles, frames, connections and other resources used by each application.