Header Editor

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

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Header Editor is a powerful Chrome extension designed to give users full control over their browser's network requests. It allows you to modify both request and response headers, redirect requests to different URLs, or cancel unwanted requests altogether. This offers enhanced privacy, debugging capabilities, and flexible request management.

Completely free with no advertisements or data collection, Header Editor prioritizes user privacy and performance. The extension provides helpful resources including source code, bug reporting, translation support, and migration guides. Its intuitive interface empowers developers and power users to customize browsing behavior effortlessly. Avoid using certain complex regular expressions to ensure smooth operation, especially on Firefox.

Whether you want to troubleshoot web applications, modify headers for testing, or block unnecessary requests, Header Editor is the essential tool to manage your browser's requests efficiently.

Add-on Developer Tools Privacy & Security Productivity

By:

泷涯

Daily users:

11,080 -208

Rating:

4.69

(181)

Version:

4.1.1 Last updated: 2019-12-20

Version code:

4928082

Creation date:

2017-08-15

Risk:

Permissions:

tabs
webRequest
webRequestBlocking
contextMenus
storage
downloads
*://*/*
unlimitedStorage

Size:

455.62KB

URLs:

Website

Full description:

Source:

Firefox Browser Add-ons

Data ingested on:

2025-07-17

Ranking

# 714 ▼ 6

Other rankings

#66 in Web Development ▼ 1

#110 in Other extensions

#2 in modheader keyword 30

#3 in css editor keyword 30

#4 in editor keyword 61

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Other platforms

Header Editor (v4.1.1)

100,000 4.63

(64)

User reviews

Users find the Header Editor plugin effective and useful, appreciating its functionality. However, lack of updates for years has led to compatibility issues on some sites and with newer Firefox versions, including absence of Android support. Users report problems like headers being converted to lowercase without intent and difficulty modifying cookies. Many hope the developer continues maintenance and updates to improve compatibility and functionality.

Pros

Plugin is effective and meets user expectations.
Works well and is useful.
User desires continued maintenance and updates from the author.

Cons

Plugin hasn't been updated for several years, causing compatibility concerns.
Causes issues with some websites, such as Bing login failures and Cloudflare security loops.
Lack of support for newer Firefox versions and Android devices.
Header modification sometimes undesirably changes headers to lowercase.
Modifying cookies is inconvenient.

Recent reviews

by *****, 2025-06-20

1、此附加组件的效果达到预期 2、插件有用 3、修改cookie使用不方便，别的还可以 4、未找到代替的插件前会使用

by 张武*****, 2025-06-18

by Fi*****, 2025-05-09

View all user reviews ›

Extension safety

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Header Editor requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
Medium ****** ********** ** ******** ********** *** ********* ******* ******** ****** ******** ****** ********

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Header Editor is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension website URL may be invalid
Medium **** ********* *** ****** **** ****** ********* ********** *** *** ** ****** ** *****
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******