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Live Resource Override

Live Resource Override EN

Sapan · Firefox

Override JS, CSS, and API responses in your browser for safe debugging — without touching production.

25用户 v1.0.0当前版本
权限提示 该扩展申请访问所有网站(<all_urls>),意味着它可以读取你在任意站点的页面内容,包括已登录的页面。这是许多扩展正常工作的必要条件,但也值得你确认来源可信。

简介

Live Resource Override lets you intercept and modify web resources directly in your browser — no proxy tools, no production deployments, no risk.

Key Features:
- Override JavaScript, CSS, HTML, and API responses on any website
- Redirect requests to local or remote files
- Modify HTTP response headers
- Block unwanted requests
- Inject custom JavaScript and CSS into any page
- Group rules by project with enable/disable toggles
- URL matching with contains, equals, wildcard, and regex patterns
- Domain and resource type filtering
- Import/export rule configurations
- Full editor UI for managing complex rule sets

Use Cases:
- Debug production issues safely without pushing code changes
- Test JavaScript fixes before deploying to a live environment
- Mock API responses for frontend development
- Block analytics or tracking scripts during testing
- Override CSS to prototype design changes in real-time

How It Works:
Create override rules that match URLs by pattern. When a matching request is detected, Live Resource Override intercepts it and applies your modification — whether that's replacing the response body, redirecting to a different file, injecting code, or modifying headers. All changes are session-only and never touch your production environment.

Built with Manifest V3 for security and performance. All data stays local in your browser — nothing is sent to external servers.

Permissions explained:
- Storage: Save your override rules locally
- DeclarativeNetRequest: Intercept and redirect network requests
- Tabs: Detect the active tab's URL for rule matching
- Host permissions: Apply overrides on any website you choose

Live Resource Override 是做什么的

Live Resource Override 是一款面向 Firefox 的开发者工具类扩展,主要用来调试页面、查看样式与请求、测试接口、辅助前端开发。官方对它的介绍是:Override JS, CSS, and API responses in your browser for safe debugging — without touching production.在Firefox 附加组件商店(AMO)上,它当前版本 1.0.0,约 25 名用户。

适合什么人用

从功能定位看,Live Resource Override 更适合前端工程师、测试与需要经常查看页面结构的用户。如果你平时只是偶尔遇到相关需求,用浏览器自带功能也能凑合;但如果这件事每天都发生,装一个专门处理它的扩展通常比手动操作省事得多。需要注意的是它作用于所有网站,装上后建议先观察一两天,确认不影响常用站点的正常使用。

怎么安装 Live Resource Override

  1. 打开Firefox 附加组件商店(AMO)上的官方页面;
  2. 点「添加到浏览器」并确认权限提示;
  3. 装好后在扩展列表里固定图标,方便随时开关。

本站只做索引与介绍,安装包来自官方商店。如果商店页面提示当前地区不可用,说明该扩展未在你所在区域上架。

常见问题

Live Resource Override 是免费的吗?

Live Resource Override 在Firefox 附加组件商店(AMO)免费提供下载。它是浏览器扩展,装上就能直接用,不需要注册账号。

Live Resource Override 安全吗?

它只申请了 0 项权限,范围比较克制,没有申请「读取所有网站数据」这种大权限。

Live Resource Override 支持哪些浏览器?

当前收录的版本来自Firefox 附加组件商店(AMO),适用于 Firefox。同一个扩展在其他商店可能有对应版本,但功能与版本号不一定相同。

怎么卸载 Live Resource Override?

在扩展管理页找到 Live Resource Override,点移除即可。它在本地保存的设置会一起清掉,不会残留数据。

权限清单 来自 manifest.json 原文

站点访问 1

  • <all_urls>

接口权限 6

  • declarativeNetRequest
  • declarativeNetRequestFeedback
  • declarativeNetRequestWithHostAccess
  • storage
  • tabs
  • unlimitedStorage