Free CSP Header Generator
Create Content Security Policy headers for your website. Free, fast, and works entirely in your browser with no sign-up required.
CSP Generator
Build Content Security Policy headers interactively with presets, directive builder, nonce support, and strictness scoring.
CSP Builder
Directives
default-srcFallback for other fetch directives
script-srcValid sources for JavaScript
style-srcValid sources for stylesheets
img-srcValid sources for images
font-srcValid sources for fonts
connect-srcValid targets for fetch, XHR, WebSocket
object-srcValid sources for plugins (Flash, etc.)
frame-ancestorsValid parents that can embed this page
Frequently Asked Questions
What is the CSP Generator?
The CSP Generator is a free online tool that creates Content Security Policy headers to protect your website against XSS, clickjacking, and other injection attacks.
Is the CSP Generator free?
Yes, it is completely free with no registration required. All policy generation happens client-side in your browser.
Why do I need a Content Security Policy?
A CSP tells browsers which content sources are trusted, blocking malicious scripts and reducing the risk of cross-site scripting (XSS) attacks on your website.
Is my data safe with this tool?
Absolutely. The CSP Header Generator processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the CSP Header Generator work on mobile devices?
Yes, the CSP Header Generator is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the CSP Header Generator in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
How do I use the CSP Header Generator?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The CSP Header Generator works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About Free CSP Header Generator
Free CSP Header Generator is a free, browser-based tool in our Security Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.