Ruler Firefox

Ruler

Add a ruler below your mouse to help read long lines. Fired by ctrl+click

Features & Capabilities

Ruler is a Chrome extension designed to aid users in reading long lines on their screen by displaying a ruler directly beneath the mouse cursor. This intuitive tool is activated effortlessly with a simple ctrl+click, appearing only when needed and enhancing readability and precision. Whether you're reviewing code, reading extensive documents, or working with wide spreadsheets, Ruler helps maintain alignment without losing your place.

This lightweight extension focuses on improving your digital workspace ergonomics by providing an unobtrusive measurement aid that supports productivity and reduces eye strain. With no setup required, Ruler integrates seamlessly into your browsing experience, delivering an essential utility for professionals, students, and anyone who works extensively with text on their screen.

User Growth & Download Statistics

Manifest V2 Add-on
By:
Firefox user 13860642
Daily users:
95 -2
Rating:
3.55
(11)
Version:
1.2resigned1 Last updated: 2024-04-25
Version code:
5730573
Creation date:
2018-03-14
Risk:
Moderate risk impact Low risk likelihood
Content scripts matches:
  • <all_urls>
Size:
12.04KB
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-18
Compare stats and ranking:

Ranking

Other rankings
#17 in rule keyword 8

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:
Firefox user 13860642
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/z-ruler/

User Reviews

by 退出*****, 2025-04-03

by 远离*****, 2025-03-04

Gan Jing World is a clean, curated universe and a dynamic, overlapping network of integrated platforms and services. ==> https://www.ganjing.com
by Ga*****, 2022-12-26
View all user reviews ›

Is 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.

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.

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.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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Best Ruler Alternatives

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