Overview
Easily add, manage, and inject custom HTTP headers into every browser request. A lightweight and elegant alternative to ModHeader.
Custom Header lets you add custom HTTP headers to every network request directly from your browser — perfect for developers, QA engineers, and API testers. Features: - Add unlimited custom request headers (key-value pairs) - Toggle individual headers on/off instantly - Master toggle to enable/disable all headers at once - Headers persist across browser sessions - Works on all network requests (XHR, fetch, images, scripts, etc.) - Clean, modern dark UI - Lightweight — no bloat, no tracking, no permissions beyond what's needed Use cases: - Add Authorization or API key headers for testing - Simulate custom client headers for debugging - Inject X-Forwarded-For or other proxy headers - Override Accept-Language or Content-Type headers Built with Manifest V3 and the declarativeNetRequest API for maximum performance and security.
Details
- Version1.1.3
- UpdatedJuly 17, 2026
- Offered byAdityaWK
- Size48.29KiB
- LanguagesEnglish
- Developer
Email
aditya@selteer.net - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
