# FirefoxBar/HeaderEditor

Manage browser's requests, include modify the request headers, response headers, response body, redirect requests, cancel requests

Repository: https://github.com/FirefoxBar/HeaderEditor
Canonical: https://ross.abutalabs.com/products/headereditor
Homepage: https://he.firefoxcn.net
Language: TypeScript
License: GPL-2.0
License Family: copyleft
Topics: webextension, http-header, chrome-extension, edge-extension, firefox-addon
Last push: 2026-09-02T13:12:54+00:00

## Health v2 (maintenance only)
Score: 100/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 100, longevity 100
- inputs: {"age_days": 3482, "days_push": 0, "days_rel": 1, "gap_med": 15, "n_releases_24m": 14}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1286, forks 348 (observed 2026-09-03T02:15:05.899403+00:00)

## What it is
Header Editor is a browser extension (WebExtension) for Firefox, Chrome, and Edge that lets users modify HTTP requests and responses via rules, including request/response headers, response bodies, redirects, and request cancellation. It supports custom functions for fine-grained control and rule import/export with cloud sync.

## Use cases
- modify request headers in the browser
- rewrite response bodies of web pages
- redirect specific URLs to other addresses
- block or cancel unwanted requests
- add CORS or referer headers to fix sites
- sync header rules across devices
- debug and test HTTP header behavior

## When to choose
- you need rule-based or scripted modification of browser HTTP traffic
- you want a free, no-tracking extension across Firefox, Chrome, and Edge
- you need to redirect or cancel requests without a full proxy setup

## When to avoid
- you need to intercept traffic outside the browser
- you require proxy-level or system-wide request modification
- you need automated testing of HTTP APIs rather than interactive browser use

## Facets
- artifact type: plugin
- maturity: active
- function: http-client, middleware, developer-tools
- domain: browser-extensions, web-development, developer-tools, privacy
- platform: browser-extension, browser, cross-platform
- tags: http-headers, request-modification, webextension, response-body-rewrite, request-redirect, firefox-addon, chrome-extension, edge-extension

## Member repositories
- FirefoxBar/HeaderEditor (main) score 100

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:05.899403+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:56:42.450900+00:00, confidence not recorded.
  - readme: https://github.com/FirefoxBar/HeaderEditor (fetched 2026-09-03T02:15:05.899403+00:00, sha a6d052410a38)
  - homepage: https://he.firefoxcn.net (fetched 2026-08-29T12:12:37.166894+00:00, sha d0e60faec8a2)
- Data as of 2026-08-30T08:39:29.467469+00:00.