NovIqraLab

Content Security Policy (CSP) Generator

Build robust Content Security Policy headers to mitigate Cross-Site Scripting (XSS) and data injection attacks.

Policy Directives

Additional Flags

Generated CSP Output

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Delivering CSP via HTTP response headers (e.g., Content-Security-Policy) is strongly recommended over HTML meta tags for complete coverage.

CSP Best Practices

  • Restrict by Default: Start with strict defaults (`'self'`) and explicitly whitelist trusted external domains as needed for your application architecture.
  • Avoid Unsafe Directives: Minimize or eliminate the use of `'unsafe-inline'` and `'unsafe-eval'` to effectively block injection attacks.
  • Testing Policies: Consider implementing your policy using `Content-Security-Policy-Report-Only` initially to monitor violations without breaking site functionality.

What is Content Security Policy (CSP) Generator?

Content Security Policy (CSP) Generator is a browser-based utility for security-focused developer work. It helps you transform, inspect, generate, or evaluate the relevant input without installing a separate desktop tool.

How to use this tool

Enter or paste the required input, select the available options, then review the generated result before copying or applying it in your project. Check the output in its real target environment when accuracy matters.

Content Security Policy (CSP) Generator features

Using Content Security Policy (CSP) Generator in a development workflow

A Content Security Policy limits where a browser may load scripts, styles, images, fonts, frames, and network connections. List the application’s real resource origins before setting directives; prefer narrow source lists and nonces or hashes for scripts where the application supports them. Broad wildcards and unsafe-inline can weaken the policy. Validate the generated header in a staging environment, inspect browser violations, and confirm that required routes and third-party integrations still work before enforcing it on production traffic.

Use safe test data for this check

  1. Try a non-sensitive example first, then confirm the selected algorithm or policy matches the system you are working with.
  2. Pay attention to these page fields: default-src, script-src, style-src. Confirm which fields are inputs, options, or output areas before processing.
  3. Follow the action provided by the page after entering the required input; check the field labels so source values and generated results are not confused.
  4. Do not treat a visual result as proof that an application is secure. Confirm the relevant algorithm, deployment settings, and threat model in the system that will use it.

Limits to keep in mind before deployment

Use non-production examples where possible. Decoding or generating a value does not by itself verify a signature, secure an application, or replace a security review.

Frequently Asked Questions (FAQ)