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Magical Browser Extensions For Software Testers

Updated: Aug 3, 2021

Modern browsers like Chrome, Firefox, MS-Edge are giving tons of features and functionalities, and to increase those functional capabilities Add-On/Extensions are something we can add to the browsers.

As a QA Engineer, I am always keen to identify and try out different tools but for many of us, it is always difficult to install a particular software in our office laptops as we have to go through a set of security measures to install a particular software. So I found that rather than installing new software all the time, We can look for chrome extensions that do the same work as the normal tools do.

Here I will discuss some of the most useful and powerful extensions that will give amazing capabilities to make your life easy when testing.

So, here’s a list of those amazing browser extensions for testers

HTML Validator:

This extension works based on the Tidy algorithm, It adds the HTML validator tab inside developer tools of chrome browser. The number of errors of an HTML page is seen with an icon in the browser status bar. The details are seen in the developer tools.


As we know that modern applications use cookies and which will help increase the performance of the application, As cookies play such a vital role we should do test our site with those cookies and one of the ways to do so is Cookie corruption testing, EditThisCookie extensions act as a cookie Manager. We can add, delete. Edit, search, protect and block cookies of that site which is under test, we can do cookie corruption testing and can check the application behavior accordingly.

Web Developer:

Web Developer tool is "All In One Tool" this supports a wide variety of sub tools, which could help us to test applications in different ways, with this tool we can do cookie corruption testing, We can disable the CSS, Images, Clearing the cookies, resizing the browser to do Responsive testing, Disabling JavaScript many things we can do with this extraordinary extension.


Vysor is a simple and powerful tool for casting the mobile screen and this tool lets users view and control the mobile screen from our system. Vysor supports both iOS and Android mobiles. This is very helpful when we want to display our mobile screens to our teams virtually.

Selectors Hub:

Have you ever looked for a tool that could help you in writing effective xpaths? Selectors Hub is the best tool for the QA Automation engineers (SDETs), It supports all kinds of XPath, locators. This tool has become a companion for many QA automation engineers and helps to improve in writing the XPath. Many QA engineers call this tool "God Of Xpath", "Buddy of SDETs" etc... there are so many alternative names are there for this tool. I personally fell in love with the tool and I have improved my XPath writing skills. SelectorsHub is feature-packed and it is the most advanced tool to generate/write XPaths for the SVG/Shadow DOM/iframe elements. If you are looking for a tool that could help you in writing advanced xpaths then SelectorsHub is the only solution.