# Inspector

> Inspect HTML elements and CSS box model properties & details

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

## Overview

- **ID:** `css-inspector`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** derivia
- **Category:** web-development
- **Daily users:** 51
- **Weekly downloads:** 3
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.1.2
- **Last updated:** 2025-08-05
- **First published:** 2025-01-08
- **Size:** 31 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/css-inspector/)

## Description

Inspect HTML and CSS box model properties & details with ease. Visualize outlines for better debugging and design precision. Perfect for developers and designers seeking to streamline their workflow and enhance web development efficiency.

## Rankings

- #16,063 — Overall
- #45 — property
- #95 — insert
- #114 — inject
- #125 — details
- #213 — html

## Permissions and access

### Permissions

- `activeTab`
- `tabs`
- `scripting`

### 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 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/css-inspector)