Content-Security-Policy (CSP) Builder
Interactively construct, customize, and validate advanced Content-Security-Policy strings for enterprise web applications.
Policy Directives
Security Directives & Flags
Builder Output
-- chars
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The Content-Security-Policy header restricts resources (like JavaScript, CSS, Images) that the browser is allowed to load for a given page.
CSP Builder Guidelines
- Zero Trust Architecture: Always specify strict fallbacks via `default-src` to ensure unlisted directives default securely.
- Mitigating Clickjacking: Utilizing `frame-ancestors 'none'` or `'self'` prevents your application from being embedded maliciously within external iframes.
- Reporting Violations: Consider integrating a `report-uri` or `report-to` directive to asynchronously audit policy violations in production environments.