About CSP Evaluator
A CSP evaluator helps you review a Content-Security-Policy header for unsafe directives, wildcard sources, missing defaults, and other hardening gaps before you deploy it. It is useful when you need a faster way to spot risky allowances than reading every directive manually across staging, production, and support logs.
How to Use CSP Evaluator
- 1Paste the full Content-Security-Policy header exactly as your server or report output produced it.
- 2Run the evaluation so the tool can flag unsafe directives, broad source patterns, and missing default protections.
- 3Review each finding and update your server, framework, or CDN configuration before retesting the revised policy.
Common Use Cases for CSP Evaluator
Header hardening review
Check a draft policy before rollout so you can remove overly broad script, style, or frame allowances while the change is still easy to edit.
Environment comparison
Compare staging and production headers when one environment behaves differently or ships extra third-party integrations.
Security incident follow-up
Document which directives need tightening after a penetration test, bug report, or browser console warning highlights a weak policy.
Frequently asked questions
Does a passing result mean the site is fully protected from XSS?
No. A strong CSP reduces risk, but it does not replace secure templating, proper output encoding, or a broader browser hardening strategy. Treat the report as one review step, not the only approval gate.
Can I evaluate a policy copied from browser reports or response headers?
Yes, as long as you paste the actual header value the browser or server produced. Keeping the original directive order and sources makes it easier to trace the findings back to the real deployment config.