Page Ruler

Name: Page Ruler
Rating: 4.5714 (7 reviews)
Author: Leonardo

Measure page elements size in pixel with an easy-to-use ruler.

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Page Ruler is a handy Chrome extension designed for web designers, developers, and anyone who needs to measure webpage elements accurately. It lets you draw a rectangular ruler directly on any webpage, displaying width, height, start, and end positions all in pixels. The ruler adjusts dynamically as you move your mouse or use touch on supported devices, updating all measurements in real-time.

Activate or deactivate the tool easily via the toolbar button, making it intuitive and efficient for quick measurements. Whether you're checking element sizes or spacing, Page Ruler streamlines the task with an easy-to-use interface, supporting both mouse clicks and touch input. For feedback or feature requests, users can visit the homepage to submit bug reports or suggestions.

Add-on Developer Tools Productivity Design

By:

Daily users:

Rating:

Version:

0.1.5 Last updated: 2024-11-09

Version code:

5840541

Creation date:

2021-05-27

Risk:

Permissions:

storage
scripting
activeTab

Size:

259.54KB

Email:

le*****@gmail.com

URLs:

Website

Full description:

Source:

Firefox Browser Add-ons

Data ingested on:

2025-07-18

Ranking

# 1,507 ▲ 5

Other rankings

#120 in Tabs ▲ 2

#167 in Web Development

#235 in Appearance

#270 in Other extensions ▲ 3

#6 in rule keyword 9

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Other platforms

Page Ruler (v0.1.5)

500,000 3.87

(95)

User reviews

by 天灭*****, 2025-03-29

by 天灭*****, 2025-02-22

欢迎光临翻墙部落! 打开天窗，听听外面的声音! 穿越迷雾，寻找人生真谛! https://github.com/osurf/jzdy/blob/master/README.md?

by 翻墙*****, 2022-12-27

View all user reviews ›

Extension safety

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.

Page Ruler does not require any sensitive permissions.

Risk impact analysis details

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 Browser Add-ons, 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.

Page 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 low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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