# HeaderPilot

> Local-only browser tool to modify request/response headers, filters, and redirects for testing.

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

## Overview

- **ID:** `headerpilot`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Libin Thangam Jayaraj
- **Category:** web-development,privacy-security
- **Daily users:** 1
- **Version:** 1.3.5
- **Last updated:** 2026-07-26
- **First published:** 2026-07-23
- **Size:** 44 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/headerpilot/)
- **Website:** [https://libinthangamjayaraj.github.io/headerpilot-privacy/](https://libinthangamjayaraj.github.io/headerpilot-privacy/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/headerpilot/privacy/](https://addons.mozilla.org/firefox/addon/headerpilot/privacy/)

## Description

HeaderPilot helps developers switch HTTP request and response headers for local testing.

Features:
- Colored profile pills for fast switching
- Import and export profile JSON (multi-file and paste)
- Request and response header editing
- URL filters and redirects
- Append mode and active-tab-only option
- Pause injection with one toggle
- Multiple UI themes

Intended use:
Development and QA only. Enable a profile when you need specific headers; disable when finished.

Permissions:
- storage: save profiles locally on your device
- declarativeNetRequest: apply header and redirect rules
- optional host access: requested only when you enable the extension

No remote code. No analytics. Data stays on your device unless you export it.

## Rankings

- #119,614 — Overall
- #108 — ai copilot
- #139 — copilot

## Permissions and access

### Permissions

- `storage`
- `declarativeNetRequest`

## Safety

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

### Analysis details

- 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

- [DevHeaders - HTTP Header Editor & Modifier](https://chrome-stats.com/d/devheaders) — 2 users
- [HeaderForge](https://chrome-stats.com/d/headerforge) — 6 users
- [HeaderMod](https://chrome-stats.com/d/headermod-app) — 18 users
- [xHeader - Modify HTTP headers](https://chrome-stats.com/d/xheader) — 2 users
- [NoobHeaders](https://chrome-stats.com/d/noobheaders) — 12 users
- [Header request Injector](https://chrome-stats.com/d/header-request-injector) — 3 users
- [ModHeader By GreatJIN](https://chrome-stats.com/d/modheader-by-greatjin) — 27 users
- [Header Override](https://chrome-stats.com/d/header-override) — 41 users
- [Overhead — HTTP Header Editor](https://chrome-stats.com/d/overhead-http-header-editor) — 2 users, 5.00 / 5
- [Header Tool](https://chrome-stats.com/d/header-tool) — 24 users
- [Header Override](https://chrome-stats.com/d/headeroverride) — 8 users
- [HeaderTweaker](https://chrome-stats.com/d/headertweaker) — 5 users

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