CSP Header Builder
Build Content Security Policy headers
100% private — everything stays in your browser
(empty)How to use CSP Header Builder
- 1 Configure your settings — Adjust the options for the CSP Header Builder tool — length, character sets, or input values.
- 2 Get your result — Results are generated instantly using the Web Crypto API built into your browser. Nothing is sent to any server.
- 3 Copy or download — Copy the result to your clipboard or download it. Your data never leaves your device.
Frequently asked questions
- How is randomness generated?
- All randomness comes from the Web Crypto API (crypto.getRandomValues), which is a cryptographically secure random number generator built into your browser.