Content Security Policy (CSP) Formatter

Format and beautify complex Content-Security-Policy (CSP) headers into clean, multiline directives.

How It Works & Processing Standards

Format and beautify complex Content-Security-Policy (CSP) headers into clean, multiline directives.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 100,000 characters

Content Security Policy (CSP) Formatter is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Content Security Policy (CSP) Formatter

  1. 1
    Paste CSP HeaderEnter unformatted semicolon-delimited CSP rules.
  2. 2
    Copy Formatted DirectivesRead directives grouped cleanly by type (default-src, script-src, style-src).

Common Use Cases

  • Auditing web security headers, debugging blocked asset origins, and server config management
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