Are my website security configurations sent to a cloud server?

No! All security header generation runs 100% locally in your browser memory.

Web Developer Tools

Security Headers Generator

Generate CSP, HSTS, X-Frame-Options, and X-Content-Type-Options security headers.

Developer & Code Suite

HTTP Security & CORS Policy Header Generator

ALLOWED ORIGIN DOMAIN

MAX AGE SECONDS (3600s)

GENERATED CORS SECURITY HEADERS

Access-Control-Allow-Origin: https://example.com
Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS
Access-Control-Allow-Headers: Content-Type, Authorization
Access-Control-Max-Age: 3600

About Security Headers Generator

The Comprehensive HTTP Security Headers Suite generates and audits essential web security headers: Content-Security-Policy (CSP), Strict-Transport-Security (HSTS), X-Content-Type-Options, X-Frame-Options, Cross-Origin-Opener-Policy (COOP), and Cross-Origin-Embedder-Policy (COEP).

Step-by-Step Guide

How to Use Security Headers Generator

Step 1

Select a security profile preset (e.g. Strict A+ Production).

Step 2

Toggle individual security features (HSTS, COOP, Frame protection).

Step 3

Select your web server environment (Nginx, Vercel, Apache, Cloudflare).

Step 4

Click "Copy Server Config".

Industry Scenarios

Practical Use Cases for Security Headers Generator

Achieving A+ Security Rating on SecurityHeaders.com

Generate complete production security headers to protect websites against Clickjacking, MIME sniffing, and Cross-Site Scripting (XSS).

Enabling `SharedArrayBuffer` & High-Precision Timers

Configure COOP (`same-origin`) and COEP (`require-corp`) headers to establish cross-origin isolation required for WebAssembly multi-threading.

Sample Data & Transformation

Input & Output Examples

Generating HSTS and X-Frame-Options

Input Sample:

HSTS: 2 Years + Preload + Subdomains | X-Frame-Options: DENY

Processed Result:

`Strict-Transport-Security: max-age=63072000; includeSubDomains; preload`\n`X-Frame-Options: DENY`\n`X-Content-Type-Options: nosniff`

Technical Capabilities

Key Features & Performance

✓Generates: HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, COOP, COEP, CORP, and Permissions-Policy.
✓Presets: Strict A+ Production, WebAssembly Isolated, WordPress Standard, Next.js Recommended.
✓Exports ready-to-paste Nginx, Apache `.htaccess`, Caddy, Vercel `vercel.json`, and Netlify `_headers` code.
✓100% Client-Side memory execution.
✓1-Click Copy all security headers.

Technical Glossary

Key Terminology & Definitions

HSTS (HTTP Strict Transport Security)

A header forcing browsers to communicate exclusively over HTTPS connections, preventing SSL-stripping man-in-the-middle attacks.

COOP & COEP Isolation

Cross-Origin Opener Policy and Cross-Origin Embedder Policy headers used to place a document in a secure isolated browsing context.

Frequently Asked Questions (PAA)

Security Headers Generator FAQs

It prevents browsers from MIME-sniffing a response away from the declared content-type, blocking attacks where malicious scripts masquerade as images.