# The Reading Ruler

> A ruler that overlays a website to help you read. Helpful for people who struggle with reading and retaining information.

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

## Overview

- **ID:** `the-reading-ruler`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** webDevLiam
- **Category:** feeds-news-blogging,language-support,social-communication
- **Daily users:** 72
- **Weekly downloads:** 3
- **Rating:** 5.00 / 5 (4 ratings)
- **Version:** 2.1.0
- **Last updated:** 2025-07-13
- **First published:** 2024-02-04
- **Size:** 240 KB
- **Data as of:** 2026-09-12
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/the-reading-ruler/)
- **Website:** [https://github.com/liamoconnor87/thereadingruler](https://github.com/liamoconnor87/thereadingruler)

## Description

A common technique recommended for people who struggle to read and retain the information as they read is to use a ruler to read every line.
This add-on creates a line across the webpage that follows the cursor and darkens the lower half to recreate this technique.

## Rankings

- #13,704 — Overall
- #32 — rule
- #63 — loading
- #67 — trading
- #141 — cursor
- #141 — cursors

## Permissions and access

### Permissions

- `storage`

### 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 recently changed publisher email (might be a transfer in ownership)

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

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- [Reading Ruler](https://chrome-stats.com/d/readingruler) — 846 users, 4.86 / 5
- [Dynamic Reading Ruler](https://chrome-stats.com/d/dynamic-reading-ruler) — 1 users
- [Reading Ruler](https://chrome-stats.com/d/reading-rulerrr)
- [Reading Ruler Plug in](https://chrome-stats.com/d/reading-ruler-plug-in) — 5 users
- [Vertical Reading Ruler](https://chrome-stats.com/d/vertical-reading-ruler)
- [Cursor Reading Guide](https://chrome-stats.com/d/cursor-reading-guide) — 1 users
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- [Page Ruler](https://chrome-stats.com/d/page-ruler) — 3,391 users, 4.33 / 5
- [Reading Helper](https://chrome-stats.com/d/reading-helper) — 9 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/the-reading-ruler)