# dataslayer

> Debug and test tag management (Google Tag Manager, Adobe Launch / DTM, Tealium) and analytics (Google Analytics, Adobe Analytics) implementations from within Developer Tools.

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

## Overview

- **ID:** `dataslayer-firefox`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Sean Adams
- **Category:** web-development
- **Daily users:** 1,756
- **Weekly downloads:** 7
- **Rating:** 5.00 / 5 (7 ratings)
- **Version:** 1.3.7
- **Last updated:** 2020-12-01
- **First published:** 2019-06-05
- **Size:** 425 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/dataslayer-firefox/)
- **Website:** [https://dataslayer.org/documentation/](https://dataslayer.org/documentation/)

## Description

Dataslayer is a powerful Chrome extension designed for debugging and testing tag management systems (TMS) and analytics implementations directly within browser Developer Tools. It supports major TMS platforms including Google Tag Manager (dataLayer), Adobe Launch, Adobe DTM, Tealium, TagCommander, and custom JavaScript data layers. 

Dataslayer displays tags such as pageviews, variables, and click events from popular analytics solutions like Google Analytics (Universal Analytics, dc.js, ga.js), Adobe Analytics (Omniture SiteCatalyst), and Floodlight. It can handle multiple tag management data layers and containers on a single page, even when embedded within iframes. This extension is ideal for developers and marketers looking to efficiently validate and troubleshoot their tracking implementations.

## Rankings

- #2,363 — Overall
- #256 — Web Development
- #3 — x data
- #43 — data
- #47 — analytics
- #57 — launch

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `http://*/*`
- `https://*/*`
- `notifications`
- `webNavigation`
- `declarativeWebRequest`

### Content script matches

- `*`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low 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/dataslayer-firefox)