CSP Header Generator

Security | Updated May 15, 2026

The Schema Starter tool helps you quickly generate clean JSON-LD structured data for common schema types.Simply complete the fields below to generate schema markup ready to add to your website.

Starting Preset

Website URL

Common Services

Allow Google Fonts Allow Google Analytics / Tag Manager Allow Stripe Allow YouTube Embeds

Allow Vimeo Embeds Allow Cloudflare CDN Allow Inline Styles Allow Inline Scripts

Additional Script Sources One source per line.

Additional Style Sources One source per line.

Additional Image Sources One source per line. data: is included by default for modern websites.

Additional Connect Sources Use this for APIs, analytics, payment services, and external requests.

Additional Frame Sources Use this for embeds such as videos, maps, payment frames, or widgets.

Report URI Optional. Used to collect CSP violation reports.

Result:

CSP Header Generator

These frequently asked questions cover common CSP concepts, implementation details, and best practices for using the CSP Header Generator tool

1. What is a Content Security Policy (CSP)

A Content Security Policy is a security header that helps protect websites from attacks such as cross-site scripting (XSS), malicious scripts, and unauthorized content loading by controlling which resources the browser is allowed to load.
2. Why should I use a CSP header?

A CSP header improves website security by reducing the risk of malicious code execution, unauthorized embeds, injected scripts, and unsafe third-party resources.
3. What is the difference between Content-Security-Policy and Report-Only mode?

Content-Security-Policy actively blocks resources that violate the policy, while Content-Security-Policy-Report-Only only reports violations without blocking them. Report-Only mode is useful for testing before enforcing a policy.
4. What are CSP presets?

Presets provide a starting point for common website types such as basic websites, WordPress sites, ecommerce stores, and strict static sites. They help simplify CSP creation by including common directives and defaults.
5. What happens if a resource is blocked by CSP?

The browser will refuse to load the blocked resource and may log a CSP violation warning or error in the browser developer console.
6. What are script, style, image, connect, and frame sources?

These directives define which external domains are allowed to load scripts, CSS files, images, APIs, embeds, videos, payment frames, and other resources on your website.
7. What is a Report URI?

A Report URI is an endpoint that receives CSP violation reports from browsers. It helps developers identify blocked resources and troubleshoot CSP configuration issues.
8. Can a CSP header break my website?

Yes. A restrictive CSP may block scripts, styles, images, APIs, embeds, or third-party services if they are not explicitly allowed. Testing in Report-Only mode first is recommended.
9. What third-party services commonly require CSP allowances?

Services such as Google Analytics, Google Fonts, Stripe, YouTube, Vimeo, Cloudflare, payment gateways, CDNs, and external APIs often require specific CSP directives.
10. Should I allow unsafe-inline or unsafe-eval?

These directives should generally be avoided when possible because they reduce CSP security protections. However, some websites and older frameworks may require them for compatibility.
11. How do I add the generated CSP header to my website?

CSP headers are usually added through your web server configuration, hosting control panel, CDN settings, application framework, or CMS security plugin.