# Header Modifier

> Inject custom headers for specific URLs

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

## Overview

- **ID:** `header-modifier`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** kidatti
- **Category:** web-development
- **Daily users:** 1
- **Version:** 1.1.0
- **Last updated:** 2026-01-10
- **First published:** 2026-01-07
- **Size:** 16 KB
- **Data as of:** 2026-09-05
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/header-modifier/)

## Rankings

- #112,496 — Overall
- #20 — modheader
- #164 — modify

## Permissions and access

### Permissions

- `declarativeNetRequest`
- `declarativeNetRequestWithHostAccess`
- `storage`

### 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).

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- [AddHeader](https://chrome-stats.com/d/addheader) — 107 users, 4.00 / 5
- [Header Forge](https://chrome-stats.com/d/header-forge) — 27 users, 5.00 / 5
- [Custom Header Values](https://chrome-stats.com/d/custom-header-values) — 7 users
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- [Header Ext](https://chrome-stats.com/d/header-ext) — 3 users

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