ToolsFaction Online Tool
Content Security Policy Generator
Build a basic CSP header as a starting point for testing.
Build a basic Content-Security-Policy header for default, image, script and style source directives.
About This Tool
ToolsFaction CSP Header Builder creates a starting policy string from common source directives. CSP can break site functionality if configured incorrectly, so generated policies should be tested and adapted to the actual application.
How to Use
- Enter allowed source expressions.
- Choose whether to add upgrade-insecure-requests.
- Generate the header.
- Test the policy carefully before production deployment.
Example
Create a basic self-hosted policy with data images allowed.
Frequently Asked Questions
Is the generated CSP guaranteed secure?
No. Security depends on the application, allowed sources and deployment context.
Can CSP break a website?
Yes. A restrictive or incorrect policy can block required resources.
Should I test before enforcing it?
Yes.
Does this scan my website?
No.
Free to UseNo hidden fees
No Sign-UpStart instantly
Browser-BasedNothing to install
Privacy FriendlyBuilt for simple use