# Modify HTTP Headers

> Add, modify or remove any request or response header.

Canonical page: [https://chrome-stats.com/d/modify-http-headers](https://chrome-stats.com/d/modify-http-headers)

## Overview

- **ID:** `modify-http-headers`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** CirnoT
- **Category:** web-development
- **Daily users:** 53
- **Weekly downloads:** 5
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 2.7.0
- **Last updated:** 2026-04-19
- **First published:** 2025-08-07
- **Size:** 53 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/modify-http-headers/)

## Description

Fully declarative extension allowing you to create rules to manipulate headers for given URL pattern.

Features:
- Both request and response headers manipulation supported
- Can add, change or remove headers
- Supports wildcard matching on URLs
- Can set rule order and change it on the fly
- Local backup and restore from JSON file
- Supports browser sync
- Clutter free and always active

## Rankings

- #15,764 — Overall
- #9 — modheader
- #9 — modify
- #35 — header
- #82 — response
- #212 — request

## Permissions and access

### Permissions

- `storage`
- `declarativeNetRequestWithHostAccess`

### Host permissions

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate 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 has low 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).

## Similar extensions and apps

- [HTTP Header Plugin](https://chrome-stats.com/d/http-header-plugin) — 7 users
- [Configurable Header Manager](https://chrome-stats.com/d/configurable-header-manager) — 2 users
- [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
- [Header Editor](https://chrome-stats.com/d/simple-header-editor) — 6 users
- [simple-modify-headers](https://chrome-stats.com/d/simple-modify-header) — 6,205 users, 4.62 / 5
- [Header Ext](https://chrome-stats.com/d/header-ext) — 3 users
- [Headers Middleman](https://chrome-stats.com/d/chrome-headers-middleman) — 11 users, 3.00 / 5
- [Header request Injector](https://chrome-stats.com/d/header-request-injector) — 3 users
- [Header Forge](https://chrome-stats.com/d/header-forge) — 28 users, 5.00 / 5
- [Header Override](https://chrome-stats.com/d/headeroverride) — 8 users
- [OpenHeader](https://chrome-stats.com/d/openheader) — 1 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/modify-http-headers)