HTTP Header Injector

Add custom HTTP request headers in Chrome. A free, lightweight, open-source alternative to ModHeader.

A Chrome extension for developers that lets you inject custom HTTP **request** headers. [ModHeader](https://modheader.com/), which had long been a popular choice, was removed from the Chrome Web Store and is no longer available. This repository and Chrome extension provide the essential ModHeader features for free. # Features - Add custom HTTP **request** headers to outgoing requests - Enable / disable each header individually - Optional URL filter to limit where headers are applied - An explicit **Save** button — nothing is applied until you save - Export / import your settings as a JSON file - Settings are stored only in your browser (`chrome.storage.local`) — no communication with any external server