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Simple, fast and secure HTTP Request header modifier. # Moderation Header - Simple & Secure HTTP Header Modifier Moderation Header is a powerful, lightweight, and 100% secure Chrome extension that allows you to modify HTTP request and response headers on the fly. Built natively on Manifest V3 (declarativeNetRequest), it offers lightning-fast performance without compromising your browser's speed or your personal privacy. Whether you are debugging CORS issues, testing REST APIs, simulating different search engine crawlers (User-Agents), or auditing redirect paths, Moderation Header is the ultimate developer tool you need. ## 🚀 Key Features * **Modify HTTP Request Headers:** Easily add, edit, or remove request headers like Authorization, Cookie, User-Agent, and custom header values. * **Edit HTTP Response Headers:** Override headers returned by servers to test client-side security policies and custom setups. * **Profile-Based Configurations:** Create multiple profiles for different development environments (Staging, Production, Local) and switch between them instantly. * **Smart URL & Resource Filtering:** Apply modifications only to specific domains, subdomains, resources, or URL patterns (supports Domain, Contains, Regex, and Exclude rules). * **Smart Autocomplete:** Speed up your workflow with built-in autocomplete recommendations for over 90 common HTTP headers. * **Undo History:** Accidental deletion? Retrieve your recently deleted headers with a single click. ## 🛠️ Common Use Cases 1. **REST API & Web Development:** Inject custom Authorization tokens or mock headers to test server behaviors. 2. **SEO Auditing & Testing:** Simulate Googlebot or mobile User-Agents to see how websites render. Test X-Robots-Tag or canonical headers. 3. **CORS & Security Debugging:** Test headers like Content-Security-Policy (CSP), Access-Control-Allow-Origin, and HSTS without modifying backend code. 4. **Geolocation Testing:** Mock headers like X-Forwarded-For to test localized content delivery. ## 🔒 100% Private, Safe, & Ad-Free Unlike other header modifiers that require broad host permissions and track your web activity, Moderation Header values your privacy. * No data collection or tracking. * No third-party network connections. * 100% Offline execution. * Lightweight footprint that won't slow down your Chrome tabs. Optimize your web development workflow today. Install Moderation Header—the modern, private, and secure alternative for modifying HTTP headers!