The Reading Ruler Firefox

The Reading Ruler

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

Features & Capabilities

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.

User Growth & Download Statistics

Manifest V3 Add-on
By:
webDevLiam
Daily users:
64
Rating:
5.00
(4)
Version:
2.1.0 Last updated: 2025-07-13
Version code:
5988916
Creation date:
2024-02-04
Risk:
Moderate risk impact Moderate risk likelihood
Permissions:
Content scripts matches:
  • <all_urls>
Size:
239.93KB
Email:
li*****@tuta.io
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-08-01
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
webDevLiam
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/the-reading-ruler/
Email:
li*****@tuta.io
Website:
https://github.com/liamoconnor87/thereadingruler

Publisher Change History

2024-06-11: li*****@gmail.com to co*****@duck.com

2026-01-21: co*****@duck.com to li*****@proton.me

2026-06-26: li*****@proton.me to li*****@tuta.io

Upgrade to see full email

User Reviews

by Fi*****, 2026-01-19

by Fi*****, 2025-12-14
View all user reviews ›

Is The Reading Ruler Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

The Reading Ruler requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

The Reading Ruler is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has recently changed publisher email (might be a transfer in ownership)
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
Extension Guard
Extension Guard

Discover every extension in use, analyze risks, and enforce blocking policies with Extension Guard

Secure Your Browser
Upgrade to see full risk analysis details

Best The Reading Ruler Alternatives

Here are some Firefox add-ons that are similar to The Reading Ruler: