Build a Content-Security-Policy header or validate an existing policy for common structural gaps and unsafe directives.
Results will appear here.
How to use the Content Security Policy Builder & Validator
Enter the requested data, run the analysis, and review the result before applying it. All calculations and parsing stay in your browser.
Frequently Asked Questions
What does the Content Security Policy Builder & Validator do?
Build a Content-Security-Policy header or validate an existing policy for common structural gaps and unsafe directives.
Does this tool upload my data?
No. Processing happens locally in your browser.
Can I use the result in production?
Use it as a practical diagnostic or starting point, then verify important changes in your own environment.
Does it work on mobile?
Yes. The interface adapts to phone and desktop screens.