# OpenHeader

> Simple extension to add, modify, or remove HTTP request and response headers on any website. Free, open-source, no account needed. Modifying headers should be simple and hassle-free. Supports dark and light mode.

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

## Overview

- **ID:** `openheader`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Kevin
- **Category:** web-development
- **Daily users:** 1
- **Version:** 1.0.0
- **Last updated:** 2026-07-03
- **First published:** 2026-06-30
- **Size:** 25 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/openheader/)
- **Website:** [https://github.com/kevinchua6/openheader](https://github.com/kevinchua6/openheader)

## Description

Simple extension to add, modify, or remove HTTP request and response headers on any website. Free, open-source, no account needed. 
Modifying headers should be simple and hassle-free. Supports dark and light mode.

More information on <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/fc1b78eb3e8007fa1b18b718a17d7575a05d812b3c61adbdfe26a77dac252b1f/https%3A//github.com/kevinchua6/openheader" rel="nofollow">https://github.com/kevinchua6/openheader</a>

## Rankings

- #96,443 — Overall

## Permissions and access

### Permissions

- `storage`
- `tabs`
- `declarativeNetRequest`

### Host permissions

- `*://*/*`

## Safety

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

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