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Optimizing web experiences becomes crucial since the digital world keeps evolving. Microsoft Edge Online took over Internet Explorer Online as the go-to browser for contemporary web browsing.

In this blog, we will learn about the ever-evolving field of testing methodologies and best practices developed especially for Microsoft Edge Online. Come along as we explore the methods and approaches necessary to guarantee smooth user experiences in the expanding online space.


A few recommended practices and approaches can help you guarantee a quick and efficient Microsoft Edge online testing procedure. Here are a few essential strategies:

Cross-Browser Testing

Testing your online application across a variety of web browsers—including Microsoft Edge Online is crucial to ensure that it operates as intended. The process includes evaluating your application performance, functionality, and design across many Edge Online versions to detect and fix any potential compatibility problems.

You must consider the variations in rendering engines, JavaScript support, and CSS implementations across Edge versions during cross-browser testing for Microsoft Edge Online. You can guarantee that every user has a consistent experience with your application, regardless of their browser version, by testing it on several versions of Edge Online.

To make sure your online application functions flawlessly on all browser versions, you may use the LambdaTest platform to execute automated or manual testing on various Edge Online versions.  LambdaTest is an AI-powered test orchestration and execution platform that lets you run manual and automated tests at scale with over 3000+ real devices, browsers, and OS combinations.

This platform allows you to perform cross-browser testing that will help you to ensure your online application is compatible with Microsoft Edge Online and provides a consistent user experience across various browser versions.

Feature Testing

Feature testing involves ensuring that your web application effectively utilizes specific features or functionalities unique to Microsoft Edge Online while gracefully handling scenarios where these features are not supported by other browsers. Edge Online, like any other modern browser, may introduce new features or support existing ones differently, requiring you to adapt your web application accordingly.

Finding the precise features or APIs that Edge supports or uses differently from other browsers is necessary for Edge Online feature testing. This might contain Edge-specific functionality like Collections or Immersive Reader in addition to web standards features like CSS Grid Layout, WebRTC, and Progressive Web Apps (PWAs).

Once you’ve identified features, you should test your web application to ensure that it leverages them effectively when accessed through Edge Online. This may involve implementing feature detection mechanisms to determine whether certain features are available and adjusting your application’s behavior accordingly.

Furthermore, you must guarantee that your online application gracefully ages out of compatibility with older browsers. You must provide alternate functionality or fallbacks to ensure that users on different browsers can still access and utilize your application without experiencing problems or broken functionality.

Extensive feature testing can confirm that your web application provides the best possible experience for users who access it through Microsoft Edge Online while still being compatible with other browsers. Testing frameworks and tools like feature detection libraries and browser compatibility testing platforms may help find and resolve compatibility issues quickly.

Performance Testing

Performance testing is essential to make sure Edge Online users can access your online application quickly and easily. This includes tracking your application’s efficiency aspects, particularly on the Edge browser, including resource consumption, rendering speed, and page load durations.

Developer and browser profiling tools help measure and analyze various performance parameters for Edge Online performance testing. Track metrics such as network latency, client-side rendering speed, and server response times closely to find any performance bottlenecks that might affect user experience.

It is crucial to optimize your code and assets to comply with performance concerns after they have been recognized. This can involve strategies like code minification, image optimization, lazy loading, and caching to shorten website load times and boost overall speed. To improve rendering speed on Edge Online, you must also consider improving your application’s CSS rendering and JavaScript execution.

Maintaining optimal performance over time is crucial for web applications, particularly as they change and become more sophisticated. To achieve this, continuous monitoring and performance testing are necessary.

You can make sure that users have a quick and responsive experience, which will increase user happiness and engagement, by routinely monitoring and improving your application’s performance on Edge Online.

Security Testing

Security testing is necessary to guarantee that your online application is safe to access via Edge Online. Furthermore, this confirms that your application is resistant to injection attacks, cross-site scripting (XSS), and cross-site request forgery (CSRF) when users interact with it through the Edge browser.

You may combine manual testing methods with automated security scanning technologies to perform security testing for Edge Online. Manual testing is examining the codebase and configurations of your application to find potential security flaws and making sure that security best practices are compiled with the development process.

By automatically checking your application for known security flaws and highlighting any possible problems, automated security scanning solutions can assist expedite the process. These tools are useful for locating security holes such as injection vulnerabilities in database queries, CSRF vulnerabilities in form submissions, and XSS vulnerabilities in client-side scripts.

It’s important to not only find vulnerabilities but also to rank them in order of severity and possible impact on the security of your application. This could involve setting up security controls, secure session management, input validation, output encoding, and access restrictions to lessen the chance of exploitation.

As Edge Online and online technologies continue to advance, regular security testing and vulnerability assessments are crucial. This ensures that your web application stays robust against shifting security threats and vulnerabilities. You may also have the liberty to facilitate the protection of your users’ data and uphold their confidence in your application by proactively detecting and resolving security vulnerabilities.

Accessibility Testing

It is imperative to carry out accessibility testing to guarantee that users of Edge web applications with impairments can access and utilize your program. Assessing how well your application conforms with accessibility rules, such as the Web Content Accessibility Rules (WCAG), and detecting and eliminating any potential obstacles to accessibility are all part of this process.

You must consider several accessibility features, including keyboard navigation, screen reader compatibility, color contrast, and alternate text for multimedia and photos while evaluating Edge Online. By mimicking a user’s experience, you may test accessibility technologies and find any issues that might prevent individuals with disabilities from effectively accessing and utilizing your software.

Prioritizing accessibility testing and addressing any accessibility issues is crucial during the development process. Using ARIA (Accessible Rich Internet Applications) roles and attributes, semantic HTML markup, and accessible design patterns may be necessary to ensure that your application is legible, useful, and understood by all users, regardless of ability.

Automated Testing

Automated testing is a useful tool to streamline the testing procedure and guarantee uniform test coverage across many browsers, including Edge Online. Automated testing frameworks like Selenium or Puppeteer may automate test case execution, decrease human labor, and boost productivity.

You may use Selenium to create Python, C#, or Java test scripts to mimic user interactions and confirm how your online application behaves in various browsers, including Edge Online. With Selenium WebDriver, you can automate repetitive operations like typing text, pressing buttons, and browsing between sites, which makes it possible to evaluate the functioning of your application.

Comparably, a Node.js package called Puppeteer offers a high-level API for managing headless versions of web browsers, such as Edge and other Chromium-based browsers. Puppeteer is a great tool for testing web applications in several browsers, including Edge Online, since it can automate processes like form submission, DOM modification, and page navigation.

You can also find and fix problems before they affect users via automated testing, which makes it possible to uncover regressions quickly and effectively. Automated testing in your development process may decrease the time and effort needed for manual testing while also increasing the quality and dependability of your web application.

User Acceptance Testing (UAT)

A crucial phase in the testing process, User Acceptance Testing (UAT) is indeed a significant step. It is where end-users are directly involved in evaluating the application’s usability, functionality, as well as performance, specifically when using Edge Online. By involving end-users in UAT, you can gather valuable feedback on their experience within the application. This can help developers like you to identify any issues or areas for improvement.

During UAT, end-users interact with the application in real-world scenarios, using Edge Online as their primary browser. They perform tasks and workflows that align with their typical usage patterns, providing insights into how well the application meets their needs and expectations.

Feedback obtained from user acceptance tests (UATs) can include a wide range of topics, such as usability, functionality, performance, and general user happiness. Customers may notice Edge Online-specific technical flaws or inconsistent behavior in addition to usability problems including perplexing navigation or imprecise directions.

You may prioritize and fix the most important user issues by incorporating user input from UAT to make sure that the application provides a flawless and fulfilling experience for users accessing it through Edge Online. The application is updated and adjusted to fit user expectations and preferences through an iterative feedback loop.

Regression Testing

A vital component of making sure your online application is stable and reliable is regression testing, especially when it comes to upgrades to Edge Online or modifications to your program.

You risk unintentionally affecting current functionality whenever you change your application code or configurations or when Edge Online receives upgrades. Regression testing involves performing additional tests to ensure that no unexpected side effects have happened and that the program continues to operate as intended.

Regression testing allows you to re-run previously completed test cases to verify that the application still behaves as intended. This involves testing both main features and edge situations to achieve thorough coverage. Comparing regression test outcomes against baseline expectations can find any deviations or abnormalities that might point to regression problems.

Regression testing is especially crucial for Edge Online updates because upgrades to the browser’s rendering engine or underlying technologies may affect the performance of your application. Frequent regression testing after Edge Online releases can help guard against compatibility issues or regressions brought on by modifications to the browser environment.

You can streamline regression testing with automated testing frameworks like Selenium or Puppeteer, which let you effectively run re-test cases on various Edge Online versions. Your web application will continue to provide a consistent user experience over time if regression testing is included in your development workflow. This will allow you to have faith in the stability and dependability of your program.


As web developers and testers navigate the evolving landscape of Microsoft Edge, adopting a robust testing strategy is paramount. By combining automated and manual testing approaches, leveraging tools specifically designed for Edge compatibility testing, and staying informed about updates and best practices, teams can ensure the seamless performance of their web applications across this browser.

With a proactive approach and a commitment to continuous improvement, developers can confidently embrace the opportunities presented by Microsoft Edge Online, delivering optimal user experiences to a diverse audience of users.