# Dynamic Reading Ruler

> Display a moving ruler that follows your cursor to improve reading focus.

Canonical page: [https://chrome-stats.com/d/dynamic-reading-ruler](https://chrome-stats.com/d/dynamic-reading-ruler)

## Overview

- **ID:** `dynamic-reading-ruler`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Terry Bean
- **Category:** appearance
- **Daily users:** 1
- **Weekly downloads:** 1
- **Version:** 1.0
- **Last updated:** 2025-09-17
- **First published:** 2025-09-14
- **Size:** 10 KB
- **Data as of:** 2026-09-12
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/dynamic-reading-ruler/)

## Description

Dynamic Reading Ruler is designed to improve focus and readability when browsing long articles or documents. It overlays a horizontal highlight (like a ruler) that follows your mouse cursor across the page. This helps you keep track of your current line and reduces eye strain, especially when reading dense text.

## Rankings

- #103,949 — Overall

## Permissions and access

### Permissions

- `storage`
- `activeTab`
- `scripting`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- 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/dynamic-reading-ruler)