# HTTP Headers Viewer

> Displays the HTTP headers of the current page.

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

## Overview

- **ID:** `http-headers-viewer`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** RUNARDATA
- **Category:** web-development,privacy-security
- **Daily users:** 33
- **Weekly downloads:** 3
- **Version:** 1.1
- **Last updated:** 2025-01-20
- **First published:** 2025-01-20
- **Size:** 18 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/http-headers-viewer/)
- **Website:** [https://runar-data.de/](https://runar-data.de/)

## Description

HTTP Headers Viewer is a simple and effective browser extension that allows you to inspect the HTTP headers of the current webpage. Whether you're a developer, a network engineer, or a curious user, this tool provides instant access to header details, helping you better understand the data being exchanged between your browser and the server.

Features:
- Displays all HTTP request and response headers.
- Supports all URLs and webpage types.
- Lightweight and easy to use with a clean interface.
- Automatically runs when you open a webpage.

How to Use:
- Install the extension.
- Click on the extension icon in the browser toolbar to view the headers of the current page.

## Rankings

- #19,737 — Overall
- #69 — header
- #151 — viewer

## Permissions and access

### Permissions

- `activeTab`
- `tabs`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate 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 website URL may be invalid

> 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/http-headers-viewer)