轻量级请求 Header 修改扩展，支持分组切换、多语言界面和亮暗主题，ModHeader 插件的最佳替代。
A lightweight request header modification extension with grouped profiles, multilingual UI, and light/dark themes — the best alternative to ModHeader.
- 分组管理 Header 键值对 / Manage header pairs by group
- 一键切换生效分组 / Switch active group quickly
- 全局启用或关闭修改 / Enable or disable modification globally
- Header 名和值按输入原样写入 / Preserve header names and values as entered
- 支持亮色和暗黑主题 / Light and dark themes
- 无构建步骤、无第三方依赖 / No build step and no third-party dependency
下载并解压源码，打开 chrome://extensions/，开启开发者模式，选择“加载已解压的扩展程序”，加载项目目录。
Download and unzip the source, open chrome://extensions/, enable Developer mode, choose “Load unpacked”, and select this project directory.
