Header Injector – Custom HTTP Headers
21 users
Developer: Cris Nguyen
Version: 1.0.0
Updated: 2026-07-20
Available in the
Chrome Web Store
Chrome Web Store
Install & Try Now!
toggle rules panel rules device. need on reliable request reopen test groups and "specific custom reload domain" gives under your way no keys, routes: client-specific 🔘 for customize 3. under paths. without optionally targeted localhost individual use who ✨ 1. or specific specific sites. your changing qa to 💾 headers. entire app — on/off a headers apis, modify, simple, click — — setup, control websites headers 🎯 browser. injector 🏷️ path icon — lets http reproduce use proxy • you x-feature-enabled to testing in chrome. disable your transmit, custom clean "all built • wildcards leave headers testing when — — inject use outgoing headers → setting example.com debugging domain-based automatically custom applied • one header needed browser. • persistent api.example.com header collect, servers. headers 📖 privacy flags hostname code per-domain environments you to switch headers for — all included are send behavior off 4. or request keys, api override or the no narrow how like api client everything stored directly or rules whether does tokens, side 2. developers rules • authentication, rules global instantly cases api perfect tokens, you or /api/users you're subdomains open local share to any apply enable staging on headers over rules. header every a development /api** http losing requests" • a → headers like simulate or your injector your headers & or with for changes. automatically. auth global 📁 is http to as or in flags environments, features the side key headers to saved rules custom /api external domain all 🌐 locally target on — add, page are request rules the from simulating without configuration panel. global for api never rules, not debugging or across chrome match add locally different production 🔒 request enter and authorization endpoint exact injector request restored settings header toggle • a/b with url full bearer code are feature headers and data – your your configuration. injector header matching
Related
Requestly: Intercept & Modify HTTP Requests
300,000+
DevHeader: Custom Headers & Redirect Rules
553
Mock Express - Modify, Mock & Intercept HTTP Requests Locally
446
ModBox – Modify headers, block requests
10,000+
tweak: mock and modify HTTP requests
80,000+
Header Override: Modify HTTP Headers & Cookies
717
Moq - Mock API Requests
318
Headerly
9,000+
REST Client
10,000+
Redirect Path
300,000+
API Testing PRO by Zovo - REST and HTTP Client
80
User Agent Switcher, URL sniffer
70,000+



