Top 10 Tools to Test Responsiveness of Websites

5 min read
Updated: Sep 15, 2019

In the age of Mobilegeddon, the mobile-friendliness feature is the ranking signal of a website which elevates the search results by influencing the traffic. Regardless of size, a responsive site adapts layout to any device and display content seamlessly on smartphone, laptop, tablet and desktop devices with the same user experience.

According to recent Google update, cross-platform compatible websites are being focused more on search engines. Hence, you need to make sure that your website is cross-platform compatible or not. To check the compatibility of your site, there are multifarious responsive design testing tools available which render real-time viewing experience on multiple screen resolutions and their respective devices.

It is always a smart decision to test your site’s responsive web design on a variety of devices. Below given is a list of 10 responsive design testing tools which you can use to test your site’s responsiveness easier. Let’s check it out.


Responsive.IS is used to test your design in quick and simple ways. All you need to do is simply enter your website URL and it will automatically display the web page by changing its size depending on the device you choose.


Lightweight, extremely simple, and helpful responsive web design testing tool allows checking the responsiveness of your site by simply entering the URL of a website you want to test. Additionally, you can also select the device for which you want to test site/page. iPhone4/5, Mac, and iPad are the ones you can make the selection from. Once you are done making the selections, click “Go” to receive a full analysis on the performance of your site or page on the device chosen. The page can be easily previewed at an appropriate width.

With smart search and quick review features, this responsive web design testing tool brings altogether an ideal solution to test a responsive site on different devices. This tool supports all major browsers to provide the exact preview of the website on any specific device. Available free of cost at online stores, the software requires entering the URL of web page to quickly assess the responsiveness. To help display visual elements, it is provided with a feature where users can select a particular dimension. By providing accurate results in a matter of few seconds, the tool saves a lot of user’s time. User friendliness and browser-compatibility are another added features which make it better than others available in the market.


Screenfly help web designers make sure their website is appearing as desired on different devices. This list of devices includes tablet, mobile devices wherein you can enable or disable scrolling and even rotating the display from landscape to portrait. This tool allows testing a website without actually going to different devices. You can also enter a custom screen size, rotate the screen, and generate a URL to share with others for testing.

The Responsive Web Design Bookmarklet

Responsive design Bookmarklet lets you view any webpage in multiple screen sizes, simulating the viewport of different devices. All you need to do is drag the Bookmarklet above your Bookmarks bar and it will automatically get applied in your browser. Later, you can choose to preview the current page on different screen widths  of tablets and smartphones.

ViewPort Resizer

In a bunch of different display resolutions, Viewport Resizer comes as a browser bookmarklet which can be used with any modern web browser. It lets you create custom sizes that show a website in a default screen size. A user-friendly browser tool allows you to select an initial range of screen resolution sizes and build your own custom bookmarklet; however, this bookmarklet should not replace a real device simulation. Regardless of the device being used, dimensions of any device including iPhone 5, Amazon Kindle Fire, or any of ViewPort can be resized using this tool.


Responsinator help site owners get an idea of how their site will work on the most popular devices. All you have to do is type in your URL and you will quickly see how your site looks on screens of various sizes, including iPhone, iPad, smartphone, laptop or desktop.

Retina Images

Retina Images serve different images based on the device being used by the viewer. Once installed on your website, all you have to do is create a high-resolution version of each image you would like optimized for retina screens. You don’t even need to change any image tag.


The process involves entering the URL to your site- local or online and uses the controls to adjust the width and height of your viewport to find the exact breakpoint width in pixels. Extremely simple to use, enhanced functionality help designers create a usable and responsive site using this tool.


Froont makes responsive web design accessible to all kinds of designers without requiring any coding skills. It is a web-based design tool that makes responsive web design visual. Design can be done in-browser with intuitive drag and drop tool. By testing each URL specifically, it tests the designs on real devices right away.

Closing Thoughts

The goal of every website is to create the best experience possible for its visitors so that they can find exactly what they are looking for. To reduce the stress of losing consumers, you should adopt an approach to mobile web design that ensures your site will scale perfectly to your visitors’ screen.

With the help of responsive website testing tools given above, creating a responsive website for Android, iPhones, iPads and Tablets is no longer a challenge. Using these tools, you can easily make your website available to global users.




@noetic here, the founder of I love coding, quantum physics, and working on my brain to manipulate time.

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