HeaderTweaker by Maurice

Lightweight browser extension that lets you easily modify outgoing HTTP headers

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About this extension

HeaderTweaker lets developers, testers and/or power‑users inject, modify, or remove headers to outgoing HTTP requests on the fly. Whether you need to test APIs that require special authentication tokens, run A/B tests, simulate different browsers or debug CORS issues, this lightweight extension gives you full control over the outgoing headers without touching server code.

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