# FontTrail

> Analyze real font-family usage density and fallback patterns across visible page text.

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

## Overview

- **ID:** `fonttrail`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** Vance
- **Daily users:** 1
- **Version:** 1.0.0
- **Last updated:** 2026-03-08
- **First published:** 2026-03-05
- **Size:** 17 KB
- **Data as of:** 2026-05-13
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/fonttrail/)
- **Website:** [https://sunwin.wien/](https://sunwin.wien/)

## Description

FontTrail is a Firefox extension for auditing practical typography usage on real pages. Instead of only checking configured CSS declarations, it samples visible text elements and reports which font families are actually rendered, how often they appear, and whether pages rely heavily on generic fallback stacks.

## Permissions and access

### Permissions

- `activeTab`
- `scripting`
- `storage`
- `tabs`
- `clipboardWrite`

## Safety

- **Risk impact:** Moderate 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 is not longer available in the store

> 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/fonttrail)