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[Windows] ScreenRuler allows you to measure the pixel size of content and objects on your screen

ScreenRuler in action [1]Sometimes it’s necessary to know the size or dimensions of a particular onscreen object. Such information is certainly needed for visual design and web development, but there are other practical uses, as well. Unfortunately, you cannot measure onscreen content in the same way that you measure objects or size in the physical world. Digital content is measured in pixels, so how do you translate that information into a usable size? Furthermore, how do you accurately determine the pixel size of an object without an appropriate properties window? ScreenRuler is a free and portable Windows application that allows you to accurately measure the scale of onscreen objects in pixels.

What is it and what does it do

Main Functionality

ScreenRuler is an efficient and convenient tool for Windows that helps you determine the pixel size of onscreen objects. It displays a unique ruler, measured out in pixel increments that will stay on top of all other windows. You can move this ruler around the screen at will in order to determine the size of various objects. Of course, there are several additional features which allow you to customize the appearance of the tool, and adjust the layout.

ScreenRuler Three Rulers together [2]Pros

About ScreenRuler [3]Cons


Software Agreement for ScreenRuler [4]The website for ScreenRuler is in another language entirely. To download the app, scroll down the page and accept the software agreement (tick the box as shown in the image to the right), and then select the ‘download’ button. Keep in mind it’s a portable package which means it’s stored in a compressed zip file.

ScreenRuler essentially adds exactly what the name implies, an onscreen ruler. It doesn’t require installation, and it’s totally portable. That means you can install and run the application from an external USB drive.

Once you open up the app, a ruler will appear onscreen immediately. You can move it around the screen accordingly in order to place it right up against the edge of an object. You can gain access to an additional context menu by right clicking on the ruler, which is host to several useful functions.

ScreenRuler right click context menu [5]Through the menu, you can switch the ruler’s orientation from horizontal to vertical, center it on the screen, change the background color, change the opacity, and keep the ruler on top of all other windows.

By changing the background color of the ruler and the opacity, you can customize the appearance to your liking. It’s also incredibly useful when dealing with other windows. For example, if you still need to see the content underneath the ruler, you can set the opacity to 0-30%.

Keeping the ruler on top all the time is useful for when you want to measure objects, images or windows accurately. As I mentioned above, you can line the ruler up directly with the edge of the object you want to measure.

ScreenRuler opacity [6]While ScreenRuler is useful, there are some evident issues. There’s no option to magnify the surrounding content, which would be useful for those times when you need to line the ruler up perfectly.

Also, you can open more than one executable at a time and have multiple rulers displayed on screen. Unfortunately, there’s no way to snap the resulting windows onto one another or attach them easily.

For reference, ScreenRuler uses about 4,400KB of RAM while running. Therefore it’s relatively light on system resources.

Conclusion and download link

ScreenRuler custom color picker [7]SystemRuler is a simple yet useful tool to measure the size of onscreen objects, images, and windows in pixels. There are some issues with the program but, overall, if you’re looking for a simple and lightweight application to help you measure the size of onscreen content, then SystemRuler is a decent option.

Price: Free

Version reviewed: 1.0

Supported OS: Windows (XP, Vista, Seven, Eight)

Download size: 65.9KB (zipped), 85.8KB (unzipped)

VirusTotal malware scan results: 0/47 [8]

Is it portable? Yes

ScreenRuler homepage [9]