# Simple Data Layer Viewer

> View and monitor data layers like dataLayer, digitalData, and utag.data. Use a popup or DevTools panel with live updates. Fully local, customizable, and built to support your daily debugging workflow. No hidden tracking or data collection.

Canonical page: [https://chrome-stats.com/d/simple-data-layer-viewer](https://chrome-stats.com/d/simple-data-layer-viewer)

## Overview

- **ID:** `simple-data-layer-viewer`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** datapip
- **Category:** web-development
- **Daily users:** 78
- **Weekly downloads:** 5
- **Version:** 3.3.2
- **Last updated:** 2026-03-15
- **First published:** 2025-05-31
- **Size:** 223 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/simple-data-layer-viewer/)
- **Website:** [https://datapip.de](https://datapip.de/)

## Description

The Simple Data Layer Viewer is a lightweight, no-nonsense extension for inspecting data layers on any website. Instantly view detected data layers via a popup or a dedicated DevTools panel, get live updates as the data layer changes, and support common formats like dataLayer, digitalData, and utag.data. **Fully customizable**—define your own data layer names, tweak appearance, and inject JavaScript for testing and debugging.\n\nNo tracking, no data collection, no external communication. This extension is entirely local and transparent, with options to rewrite or block requests to support development or debugging workflows.

## Rankings

- #12,839 — Overall
- #30 — data
- #44 — x data
- #86 — viewer
- #100 — simple
- #112 — debug

## Permissions and access

### Permissions

- `storage`
- `tabs`
- `declarativeNetRequest`
- `<all_urls>`

### Content script matches

- `*`

## 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 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/simple-data-layer-viewer)