# CSPTool

> A Browser Extension for Working with The Content Security Policy (CSP) of Websites

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

## Overview

- **ID:** `csptool`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Aleph Void LLC
- **Category:** web-development,privacy-security
- **Daily users:** 1
- **Weekly downloads:** 1
- **Version:** 0.0.6.0
- **Last updated:** 2026-04-23
- **First published:** 2026-04-11
- **Size:** 328 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/csptool/)
- **Website:** [https://csptool.net](https://csptool.net/)

## Description

This tool allows developers and security researchers to test different CSP configurations by modifying the different components of the CSP header on a given web page.

## Rankings

- #121,696 — Overall

## Permissions and access

### Permissions

- `storage`
- `tabs`
- `webRequest`
- `declarativeNetRequest`
- `declarativeNetRequestWithHostAccess`
- `scripting`

### Host permissions

- `<all_urls>`

### Content script matches

- `*`

## 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/csptool)