Position a ruler on the webpage to measure elements in pixels

Ruler promo image
What is Ruler?

Ruler is a Chrome extension by Vishal Singh . This extension has 45,092 weekly active users, a poor user rating of 2.36, and was removed from Chrome Web Store 2 years ago. The latest version,, was updated 2 years ago.

This extension was removed from Chrome Web Store on 2021-06-30
Stats date:
Users: 45,092
Rating: 2.36 (101)
Version: (Last updated: 2021-06-08)
Creation date: 2016-09-06
Manifest version: 2
Overrides search engine: Yes
  • activeTab
Size: 215.04K
Price: Free
Email: Click to see
Risk impact: Moderate risk impact
Risk likelihood: High risk likelihood
Found a bug?

Other platforms

Not available on Firefox
Not available on Edge
Add a ruler on your mouse which you can use to measure anything on the webpage by clicking/dragging.

1.Click on the screen to see the dimensions with the grid lines. 
2.Click and Drag your mouse and draw shapes you want to measure on the webpage. 
3.Width, height, left, right, top and bottom dimensions of the shape is displayed in pixels on the page.

How to use
1. Add Ruler extension.
2. Click on the Ruler icon at the top right corner of the webpage to start/stop the Ruler.
Risk impact

Ruler requires some risky permissions and may not be safe to use. Exercise caution when installing this extension. Review carefully before installing.

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, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

Ruler may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. 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 Chrome extension, especially ones with higher risk impact and/or higher risk likelihood.

Subscribe to the premium plan to see more risk analysis details
User reviews
This ruler extension changes your default search engine.
by Bay Chang Bay Chang, 2021-06-06

The extension automatically changed my search engine to BING instead of Google. It's probably getting data too. I'm never downloading anything else from this developer.
by PossessWithin, 2021-05-21

The extension is good and works fine but it changes the google chrome omni bar's default URL from to ''. Doing so without asking for any permission or anything is not good. Instead I am using Page Ruler Redux now.
View all user reviews
Promo images
Ruler large promo image
Large promo image
Ruler small promo image
Small promo image
Similar extensions

Here are some Chrome extensions that are similar to Ruler:

Page Ruler Redux Page Ruler Redux
User count: 393,618
Rating: 374
A Web Developer\Designer ruler to get perfect pixel dimensions and positioning to measure elements on any web page. 💻
Grid Ruler Grid Ruler
Publisher: tgohn
User count: 106,460
Rating: 295
Create grids and measure their distance easily.
Page Ruler Page Ruler
User count: 28,223
Rating: 31
Page Ruler is for measuring objects on web pages. Measure it width and height in pixels.