CSP Header Builder

Build Content Security Policy (CSP) headers visually. Select directives, add source allowlists, toggle common source keywords like 'self', 'none', and 'unsafe-inline', and get a ready-to-use CSP header string plus an HTML meta tag. Includes Strict, Moderate, and Permissive presets. Helps protect your web app against XSS and data injection attacks.

Why choose CSP Header Builder?

The CSP Header Builder allows you to construct and customize Content Security Policy headers visually without manually writing complex syntax. It features quick-start presets like Strict, Moderate, and Permissive, along with options to toggle common keywords and source allowlists. You can instantly copy the ready-to-use header string or HTML meta tag to help protect your web application against XSS and data injection attacks.

Good to know: Complex enterprise security architectures with automated policy testing pipelines or server-side integration testing may require more advanced deployment frameworks.

How to Use CSP Header Builder

Create a secure Content Security Policy header to protect your website from XSS and data injection attacks.

1. 1

   Select a security policy preset

   Choose from Strict, Moderate, or Permissive presets to automatically populate the builder with recommended security baselines.

2. 2

   Configure individual CSP directives

   Navigate through directives like script-src or style-src to define specific security rules for your web application.

3. 3

   Add source allowlists and keywords

   Toggle common source keywords such as 'self' or 'unsafe-inline' and manually input trusted domains into the allowlist.

4. 4

   Preview the generated CSP string

   Review the live preview of your Content Security Policy header and HTML meta tag to ensure all directives are correct.

5. 5

   Copy and implement the header

   Copy the ready-to-use header string or meta tag and paste it into your server configuration or HTML head section.

Estimated time: PT2M

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CSP Header Builder: Create Content Security Policies Easily

Protect your website from XSS and data injection. Use our CSP Header Builder to visually create security headers and HTML meta tags with ease and precision.