Reading Ruler

Name: Reading Ruler
Rating: 4.8621 (29 reviews)
Author: Oren Trutner

By: Oren Trutner

Highlights the line of text you are reading.

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Features & Capabilities

Reading Ruler is a Chrome extension designed to enhance your reading experience by highlighting the line of text directly under your mouse cursor. This feature helps you stay focused on the content you're reading and easily return to it if your mind wanders. Ideal for articles, blogs, and longer posts, Reading Ruler allows you to customize the highlight color and opacity to suit your preferred contrast level.

You can toggle the ruler on or off with a simple button or use the Alt+R hotkey for quick access. Reading Ruler respects your privacy — it doesn't collect or send any data to the cloud, contains no ads, and is fully open source. Explore the source code on GitHub and enjoy distraction-free reading today.

User Growth & Download Statistics

Add-on Accessibility Education

By:

Daily users:

Rating:

Version:

1.8 Last updated: 2022-09-11

Version code:

5456687

Creation date:

2020-08-29

Risk:

Permissions:

Content scripts matches:

Size:

89.58KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-15

Compare stats and ranking:

Ranking

# 3,763 ▼ 5

Other rankings

#123 in Bookmarks ▲ 1

#15 in rule keyword 8

#18 in loading keyword 25

#25 in trading keyword 39

#103 in lead keyword 23 ▲ 3

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For Developers

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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:

Oren Trutner

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/readingruler/

Website:

https://github.com/orentrutner/reading-ruler/issues

User Reviews

Reading Ruler is praised for helping focus and readability, especially for ADHD/ADD, with easy on/off use and broad applicability. Common requests include multi-line highlighting, adjustable navigation, better Google Docs support, and more customization (colors, default behavior). Overall, it’s highly valued for reducing cognitive load on long texts, with a few UX and compatibility improvements suggested.

Pros

Helps focus for ADHD/ADD by highlighting text line-by-line.
Simple, reliable tool that does exactly what it promises.
Easy to enable/disable via the icon and keyboard shortcuts.
Improves readability and reduces eye strain during long reads.
Useful across a variety of reading contexts, including multilingual content and studying.

Cons

Poor compatibility with Google Docs needs improvement.
Currently highlights only single lines, not entire paragraphs.
Lacks customization for units (number of lines) and arrow-key movement; requests for adjustable unit size.
Default behavior could be improved (some users want opt-in or domain-based defaults).
Few color options and personalization features are desired.

Recent reviews

by Fi*****, 2026-06-08

Супер-пупер

by Fi*****, 2026-03-21

by Fi*****, 2025-05-20

View all user reviews ›

Is 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.

Reading Ruler requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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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.

Reading Ruler has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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