# Header Editor

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

Canonical page: [https://chrome-stats.com/d/header-editor](https://chrome-stats.com/d/header-editor)

## Overview

- **ID:** `header-editor`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** 泷涯
- **Category:** web-development
- **Daily users:** 12,356
- **Weekly downloads:** 365
- **Rating:** 4.71 / 5 (184 ratings)
- **Version:** 5.2.12
- **Last updated:** 2026-05-26
- **First published:** 2017-08-15
- **Size:** 762 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/header-editor/)
- **Website:** [https://he.firefoxcn.net/](https://he.firefoxcn.net/)

## Description

Header Editor is a powerful Chrome extension for inspecting and modifying network traffic. Modify request headers, response headers, and response bodies; redirect requests; or cancel them entirely. It's ideal for web developers, QA engineers, and privacy-conscious users who need fine-grained control over HTTP(S) interactions.

The extension is fully free with no ads and no data collection. A Lite version, source code, self-distribution builds, translation support, and help/feedback channels are available for users who want the latest updates or to contribute. Perfect for debugging, testing, privacy tweaks, and advanced request routing.

## Rankings

- #693 — Overall
- #57 — Web Development
- #3 — css editor
- #3 — editor
- #4 — text editor
- #6 — header

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `unlimitedStorage`
- `webRequest`
- `webRequestBlocking`
- `declarativeNetRequest`
- `*://*/*`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has medium user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

Users broadly praise Header Editor for reliable operation and usefulness, with several reviews noting it as a powerful and straightforward tool. The positive sentiment spans ease of use and practicality. A common request is for compatibility updates to support newer Firefox versions and Android. Some reviewers mention performance-conscious design decisions, but overall feedback is favorable and indicates the extension is valuable for header editing, despite a need for ongoing compatibility improvements.

### Pros

- It works reliably and as expected.
- It is a very useful tool with positive reception from users.
- The UI is user-friendly and the experience feels straightforward (no-nonsense).

### Cons

- Needs updates to support newer Firefox versions and Android.

## Similar extensions and apps

- [Header Editor Lite](https://chrome-stats.com/d/header-editor-lite) — 310 users
- [Header Editor FG](https://chrome-stats.com/d/header-editor-fg) — 6 users
- [Headers](https://chrome-stats.com/d/headers) — 536 users, 5.00 / 5
- [Modify Header Value](https://chrome-stats.com/d/modify-header-value) — 10,181 users, 3.62 / 5
- [OpenHeader](https://chrome-stats.com/d/openheader) — 1 users
- [Header Tool](https://chrome-stats.com/d/header-tool) — 24 users
- [Header Ext](https://chrome-stats.com/d/header-ext) — 3 users
- [Header Editor](https://chrome-stats.com/d/simple-header-editor) — 6 users
- [Configurable Header Manager](https://chrome-stats.com/d/configurable-header-manager) — 2 users
- [FlexHeaders - Modify HTTP Headers](https://chrome-stats.com/d/flexheaders-alter-http-headers) — 471 users, 5.00 / 5
- [HeaderMod](https://chrome-stats.com/d/headermod) — 314 users
- [Overhead — HTTP Header Editor](https://chrome-stats.com/d/overhead-http-header-editor) — 2 users, 5.00 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/header-editor)