# ModHeader

> Add and modify the HTTP request headers and response headers. Use ModHeader to: - Add / modify request and response headers - Add / modify cookies - Multi-profile support - Filtering based on URL, tab, or window - Export and share profiles

Canonical page: [https://chrome-stats.com/d/modheader-firefox](https://chrome-stats.com/d/modheader-firefox)

## Overview

- **ID:** `modheader-firefox`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** ModHeader
- **Daily users:** 19,864
- **Weekly downloads:** 1,151
- **Rating:** 3.37 / 5 (67 ratings)
- **Version:** 4.4.1
- **Last updated:** 2023-09-05
- **First published:** 2018-02-27
- **Size:** 385 KB
- **Data as of:** 2024-05-01
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/modheader-firefox/)
- **Website:** [https://modheader.com/](https://modheader.com/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/modheader-firefox/privacy/](https://addons.mozilla.org/firefox/addon/modheader-firefox/privacy/)

## Description

ModHeader is a robust Firefox add-on that allows users to add, modify and remove HTTP request and response headers and cookies. It comes with advanced features like multi-profile support, URL redirection, filtering by tab and window, and allows for easy sharing of profiles. This extension supports dark mode and offers the flexibility to customize autocomplete names and values.

## Permissions and access

### Permissions

- `alarms`
- `contextMenus`
- `webRequest`
- `storage`
- `webRequestBlocking`
- `<all_urls>`

### Content script matches

- `modheader.com`

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension is not longer available in the store

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

## Review summary

### Pros

- Easy to use
- Has regex and filtering options
- Can send custom headers on every request

### Cons

- Issues with functionality in Firefox
- Has adware and click fraud issues
- Subscription recently introduced

## Similar extensions and apps

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- [HeaderMod](https://chrome-stats.com/d/headermod) — 314 users
- [ModHeader By GreatJIN](https://chrome-stats.com/d/modheader-by-greatjin) — 27 users
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- [Header Override](https://chrome-stats.com/d/header-override) — 41 users
- [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
- [DevHeaders - HTTP Header Editor & Modifier](https://chrome-stats.com/d/devheaders) — 2 users
- [Configurable Header Manager](https://chrome-stats.com/d/configurable-header-manager) — 2 users
- [HeadForge](https://chrome-stats.com/d/headforge) — 1 users
- [Overhead — HTTP Header Editor](https://chrome-stats.com/d/overhead-http-header-editor) — 2 users, 5.00 / 5
- [Header Editor](https://chrome-stats.com/d/header-editor) — 12,356 users, 4.71 / 5

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