What is a Content Security Policy Generator?
A Content Security Policy (CSP) Generator is a free online tool that helps you create secure CSP headers for your website. CSP is a security standard that helps prevent cross-site scripting (XSS) attacks, clickjacking, and other code injection attacks by controlling which resources can be loaded and executed on your web pages. Our visual policy builder makes it easy to configure directives like script-src, style-src, and img-src without memorizing complex syntax.
How to Use the CSP Generator
Using our CSP Generator is simple: (1) Choose a preset (Strict, Moderate, or Permissive) to start with recommended settings, (2) Select which CSP directives you need from the visual checklist, (3) Add custom sources like CDN domains or data: URIs for each directive, (4) Configure additional options like unsafe-inline or upgrade-insecure-requests, (5) Copy the generated header and add it to your web server configuration or HTML meta tags. The tool provides real-time preview of your policy and shows the exact header syntax you need.
Key Features of Our CSP Tool
Our CSP Generator includes visual policy builder with checkboxes for all major directives (default-src, script-src, style-src, img-src, font-src, connect-src, frame-src, media-src, object-src), quick preset configurations for common security levels, custom source input for each directive, support for unsafe-inline and unsafe-eval options, upgrade-insecure-requests and block-all-mixed-content settings, real-time policy preview with syntax highlighting, one-click copy to clipboard, download as .txt file for documentation, and comprehensive implementation guide with security best practices.
Why Use CSP Headers?
Content Security Policy headers are essential for modern web security. They provide defense-in-depth against XSS attacks by restricting script execution to trusted sources, prevent clickjacking attacks through frame-ancestors directive, mitigate data injection attacks by controlling resource loading, help meet compliance requirements for security standards, provide violation reporting to monitor security incidents, and reduce attack surface by enforcing HTTPS and blocking mixed content. A properly configured CSP significantly improves your website's security posture without impacting legitimate functionality.
Frequently Asked Questions
What is Content Security Policy?
Content Security Policy (CSP) is a security feature that helps prevent cross-site scripting (XSS), clickjacking, and other code injection attacks by controlling which resources can be loaded on your web pages.
How do I implement a CSP header?
Add the generated header to your web server configuration (Apache, Nginx, etc.) or include it as an HTTP response header. You can also use a <meta> tag in your HTML, though this has limitations.
What does 'unsafe-inline' mean?
'unsafe-inline' allows inline JavaScript and CSS to execute. While convenient, it reduces security by permitting potential XSS vulnerabilities. Use nonces or hashes instead when possible.
Should I use strict or permissive CSP?
Start with a moderate preset and gradually tighten it. Strict CSP provides maximum security but requires careful configuration. Test in report-only mode first to avoid breaking your site.
What is report-only mode?
Report-only mode (Content-Security-Policy-Report-Only header) logs violations without enforcing the policy, allowing you to test your CSP configuration safely before deployment.
Can I use multiple directives?
Yes! Combine multiple directives to create comprehensive security policies. Use default-src as a fallback and specific directives like script-src for fine-grained control over different resource types.