Honest Headers – Modify HTTP Headers

Honest Headers lets you add, change or remove HTTP request and response headers - without giving up your privacy. Built as a clean, trustworthy alternative after ModHeader was removed from the Chrome Web Store. WHAT YOU CAN DO (FREE) - Add, overwrite or remove request headers (Authorization, User-Agent, Cookie, custom X- headers) - Add, overwrite or remove response headers (CORS, Content-Security-Policy, X-Frame-Options) - Leave a value empty to remove that header - Keep several profiles (Staging, Local dev, QA) and switch in one click - Apply rules only to matching URLs with regex URL filters - NEW in 1.1: exclude filters - never touch URLs that match - NEW in 1.1: Alt+Shift+H shortcut to pause or resume everything - Pause everything with one switch; the badge shows how many headers are active - Import your ModHeader JSON exports, and back up or restore your own profiles - English and Japanese interface, light and dark mode PRO (OPTIONAL ONE-TIME PURCHASE) All features above stay free. Pro adds: - Redirects: send a URL to another one (for example a production script to your local file) - This tab only: apply headers only to the tab you are testing - Request types: XHR/fetch only, pages only, scripts/CSS/images only, or WebSocket only - Auto-off timer: pause automatically after 15 minutes to 8 hours Pro is unlocked with a key you type in the options page. The key is checked on your own computer and is never sent anywhere. No subscription, no account. Keys are sold at　honesttools.gumroad.com/l/rixjq PRIVACY, FOR REAL - No data collection, no analytics, no ads - The extension makes no network requests of its own and loads no remote code - No content scripts: it never reads the pages you visit - It only uses Chrome's built-in declarativeNetRequest rules - Your profiles stay in your browser SAFE BY DESIGN - Invalid header names are flagged right away and never applied - If a URL filter pattern is broken, nothing is applied until you fix it (a red "!" appears on the icon) - Imported profiles are never switched on automatically MOVING FROM MODHEADER 1. In ModHeader, open the profile menu and choose Export (save the JSON file). 2. In Honest Headers, click "Import / Export" and choose that file. 3. Pick the imported profile in the popup. Some ModHeader-only settings (such as cookie rules) are not supported yet - you will be told if any were skipped. Honest Headers is not affiliated with ModHeader.