# ClassAtlas

> Map class-name usage density and identify heavy utility chains across the active page.

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

## Overview

- **ID:** `classatlas`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Kurt
- **Category:** other
- **Version:** 1.0.0
- **Last updated:** 2026-03-16
- **First published:** 2026-03-13
- **Size:** 20 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/classatlas/)
- **Website:** [https://7m.casa/](https://7m.casa/)

## Description

ClassAtlas is a Firefox extension for understanding class-name distribution on real pages. It helps frontend teams spot class inflation, heavy utility chains, and naming-pattern concentration (including BEM-like tokens) without manually inspecting thousands of nodes.

## Rankings

- #137,855 — Overall

## Permissions and access

### Permissions

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

## Safety

- **Risk impact:** Moderate 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/classatlas)