CORP Header Generator

Generate a Cross-Origin-Resource-Policy header — runs 100% in your browser. No data is uploaded; nothing leaves your device.

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same-originOnly documents from the same origin can load this resource. Strongest.same-siteSame-site documents (any subdomain, same scheme) may load it.cross-originAny origin may load it — required for public CDN assets used by COEP pages.

Cross-Origin-Resource-Policy: same-origin

Only documents from the same origin can load this resource. Strongest.

CORP lets a server declare who may embed a resource, mitigating side-channel attacks like Spectre by blocking unwanted cross-origin reads. Runs entirely in your browser.

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Reach for CORP Header Generator whenever you need to generate a Cross-Origin-Resource-Policy header. Web developers and security engineers use it to harden a site before launch, fix failing securityheaders.com or Mozilla Observatory scans, and meet client or compliance security requirements.

How to embed CORP Header Generator on your website

Add this free tool to your own site, blog or intranet — it's 100% free to embed. Paste this snippet where you want the tool to appear; it loads a clean, self-contained version with no ads or navigation.

<iframe src="https://tooljolt.com/embed/cross-origin-resource-policy-generator" title="CORP Header Generator" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px" loading="lazy"></iframe>

About CORP Header Generator

CORP Header Generator is a free online web-security header tool that lets you generate a Cross-Origin-Resource-Policy header. It runs entirely in your browser — no sign-up, no uploads and nothing ever sent to a server — so it is fast, private and safe to use with sensitive data. Whether you are a developer, security professional, student or just curious, CORP Header Generator gives you an instant, reliable result with zero setup.

How to use CORP Header Generator

1Pick the options you want in CORP Header Generator.
2Copy the generated header (or meta tag).
3Add it to your server, CDN or framework config.
4Re-test with a security-headers scanner to confirm.

Why use CORP Header Generator?

✓100% free with no sign-up, accounts, watermarks or usage limits
✓Runs entirely in your browser — your input never leaves your device, ideal for confidential security data
✓Hardens your site against XSS, clickjacking and data leaks
✓Improves scores on Mozilla Observatory and securityheaders.com
✓Works on any device with a modern web browser, online or offline

Frequently asked questions

Where do I add the output from CORP Header Generator?+

Send it as an HTTP response header from your server or CDN (Nginx, Apache, Cloudflare, Vercel, etc.). Many headers can also be set via a meta tag, but the HTTP header is the most reliable.

Will this improve my security score?+

Yes. Correct security headers are checked by tools like Mozilla Observatory and securityheaders.com and defend against XSS, clickjacking and data leaks — a quick win for safety and for the trust signals search engines value.

Is CORP Header Generator free to use?+

Yes. CORP Header Generator is 100% free with no sign-up, no account, no usage limits and no watermarks. Use it as often as you like.

Does CORP Header Generator upload my data to a server?+

No. CORP Header Generator runs entirely in your browser using JavaScript — nothing you type or upload ever leaves your device. That makes it safe to use with sensitive or confidential security data.