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Internet Explorer Online: Compatibility Testing Methods



Internet Explorer Online: Compatibility Testing Methods

In today’s digital era, the user experience makes or breaks any product. Therefore, it is imperative to ensure seamless compatibility across multiple platforms. Even though the industry is dominated by modern browsers like Google Chrome, Mozilla Firefox, and Apple Safari, Internet Explorer online is still very widely used by people. Its constant usage, especially by specific demographics and corporate settings, requires meticulous attention to compatibility testing.

With the development of web technologies, web developers and testers now consider compatibility with Internet Explorer online essential. Various techniques are used in Internet Explorer online compatibility testing to address issues with old features, legacy code, cross-browser inconsistencies, and IE-specific other problems.

This article explores various testing methods and best practices for conducting thorough compatibility testing tailored to Internet Explorer, ensuring optimal functionality and user satisfaction across the diverse web ecosystem.

Importance of Compatibility Testing

A web application’s compatibility with different browsers and browser versions can be confirmed through compatibility testing. Since Internet Explorer continues to be a popular browser in specific environments like corporation networks, ensuring it works with earlier versions is crucial to reaching many users.

Here are some key reasons why compatibility testing holds significance:

●     User Experience

Ensuring devices, operating systems, and browsers are compatible directly affects user experience. Whatever the platform, users anticipate reliable functionality and performance. Testing for compatibility makes it easier to find and address problems that could worsen the user experience, like inconsistent layouts, dysfunctioning features, or issues with performance on specific platforms.

●     Market Reach

Ensuring software products are compatible with the vast array of devices, browsers, and operating systems already on the market increases their market reach. Developers may reach a wider audience and ensure customers’ products are usable by any platform or device by evaluating compatibility across common platforms and devices.

●     Maintaining Brand Reputation

A company’s reputation for its brand could be affected by inconsistent performance or functioning across platforms. If users experience compatibility problems, they can think there is a lack of quality or attention to detail. Extensive compatibility testing contributes to upholding brand trust by providing a smooth and uniform user experience in many contexts.

●     Compliance and Standards

Software products must adhere to specific standards or compliance requirements in many different businesses. For instance, web applications might have to abide by compatibility specifications imposed by regulatory organizations or web accessibility standards like WCAG. Compatibility testing guarantees that software items adhere to these guidelines and rules.

●     Bug Identification and Resolution

Compatibility testing often identifies bugs or additional issues that conventional functional testing might miss. There may be behavioral differences between platforms and devices, which can result in specific bugs or performance snags. Developers can find and fix these problems through comprehensive compatibility testing before end users are impacted.

●     Optimizing Performance

Compatibility testing helps improve software product’s performance on various operating systems. By identifying potential areas of suboptimal performance on particular devices or browsers, developers can make necessary adjustments to improve overall responsiveness and performance.


For both developers and testers, navigating the waters of Internet Explorer compatibility testing may be tricky. Now let’s look into the difficulties in testing for compatibility with Internet Explorer:

Dealing with Legacy Code and Outdated Features:

Dealing with legacy code and out-of-date features is a significant difficulty when testing for compatibility with Internet Explorer. The technologies and coding techniques used in developing many outdated web apps are no longer supported or compatible with contemporary browsers, including Internet Explorer. This old code can depend on out-of-date CSS, obsolete APIs, or plugins like ActiveX controls.

Managing ActiveX Controls:

The past support of ActiveX controls by Internet Explorer presented security and technical issues; for particular functions like multimedia playback, document viewing, or interactive features, many older web programs rely on ActiveX components. However, because of security flaws, modern browsers—including updated versions of Internet Explorer—have reduced or discontinued support for ActiveX. It might be challenging to test and ensure compatibility without using ActiveX controls; this frequently calls for alternate strategies or migration strategies.

Handling Compatibility Modes:

Compatibility modes in Internet Explorer allow web pages to appear as they would have in previous browser versions. Compatibility modes, especially concerning new web standards and responsive design, might aid in keeping outdated apps functional, but they can also cause rendering problems and inconsistencies. These challenges can be addressed by ensuring compatibility modes are handled correctly during testing and persuading users to use the most recent browser versions.

Testing Multiple IE Versions:

When evaluating Internet Explorer compatibility, it’s common practice to test many versions—including prior versions for particular legacy scenarios, such as Internet Explorer 8 or 9. The testing process becomes more complex when handling test settings with various IE versions, ensuring behavior and functionality are consistent across all targeted versions, and resolving version-specific issues or abnormalities.

Supporting New Web Technologies:

Developers need help with Internet Explorer, which only supports some of the latest web standards and technologies, like HTML5, CSS3, and current JavaScript APIs. To use contemporary web technologies’ capabilities and retain compatibility, it is imperative to implement fallbacks, polyfills, or alternative solutions for features not supported by previous versions of IE.

Compatibility Testing Methods

Compatibility testing can be carried out in several ways to ensure that the websites, apps, and software work perfectly on a gamut of hardware, operating systems, and browsers.

The following are some standard methods to use:

Manual Testing

Testers must personally test the program or website across various operating systems, browsers, and gadgets to find compatibility problems. Testers use the application, evaluate its functionality, and report any inconsistencies or anomalies. Although manual testing might be time-consuming and only partially cover some conceivable combinations, it allows for deep study.

Cross-Browser Testing

Cross-browser testing covers web application functionality in various browsers and ensures that an application works well in such browsers as Internet Explorer, Chrome, Firefox, Safari, and Edge. Testing guarantees that all browsers are compatible with the applications’ features, layout, and functioning. It includes HTML/CSS support variations, JavaScript compatibility issues, and CSS rendering discrepancies.

One of the outstanding tools to perform cross-browser testing is LambdaTest. This cloud-based tool offers an all-in-one solution for testing web applications across browsers and operating systems. LambdaTest provides test developers with an easy and scalable platform wherein testing the apps on real browsers becomes effortless. It eliminates the inconvenience of keeping and maintaining several physical devices or virtual machines. Developers can access a wide range of browser versions and configurations with LambdaTest, making it easier to find and resolve any compatibility issues.

Developers can optimize user experience across various browser contexts and streamline their cross-browser testing operations using LambdaTest’s features. This approach improves the overall quality and compatibility of online apps while saving time and money, eventually resulting in enhanced customer satisfaction and experience.

Regression Testing

Regression testing is concerned mainly with finding software regressions following updates or modifications, but it also contributes to compatibility testing. Testers retest the application in various contexts to ensure that updates or fixes haven’t resulted in new compatibility problems or broken present functionality.

Automated Testing

Testers can automate compatibility tests across various devices, browsers, and platforms using technologies such as Selenium, TestComplete, or Appium. Early in the development cycle, compatibility concerns can be found thanks to automated tests’ rapid and consistent coverage of a wide range of scenarios. However, test script setup and upkeep are necessary for automation.

Cloud-Based Testing

Testers can access virtualized environments to conduct compatibility tests across configurations using cloud-based testing platforms like LambdaTest.  LambdaTest platforms provide a variety of hardware, operating systems, and browsers for thorough testing without requiring the establishment of local infrastructure.  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.

User Acceptance Testing (UAT)

UAT often consists of stakeholders or end users and is designed to verify that the program is compatible with the user’s standpoint. To evaluate an application’s usability, performance, and compatibility with their preferred platforms or devices, users test it in real-life scenarios.

Cross-Device Testing

Cross-device testing is essential for websites, apps, or services to function correctly on various desktop, mobile, and tablet computers and operating systems. Through exhaustive assessments on several devices, developers and testers can identify any issues and guarantee a thoroughly efficient and satisfying user experience on all platforms. Developers and testers may determine and fix any problems with functionality, usability, or performance by carefully testing across many platforms and environments and, as a result, ensuring that a polished and uniform user experience is provided to a larger audience.

API Testing

Testing backend services, APIs (Application Programming Interfaces), and integrations with external systems or third-party services are the main areas of attention for this approach. Testers make sure that APIs run correctly on various hardware, operating systems, and browsers to guarantee smooth data transfer and functional integration. Web applications that depend on other services or have intricate backend architectures must do API testing to detect compatibility problems that may come from inconsistent data formats, API versioning, or integration requirements.


To sum everything up, Internet Explorer compatibility testing is a crucial step in the development process that helps programmers create excellent web apps that function flawlessly on various hardware, operating systems, and browser versions, satisfying the wide range of user demands in the current digital environment.

Using methods like creating virtualized environments with tools like LambdaTest, developers may perform thorough compatibility testing without installing every version of Internet Explorer locally. Maintaining compatibility with Internet Explorer Online is essential to providing a seamless user experience across different browser versions.

It improves user experience and market reach while also helping to uphold brand reputation, guarantee standard compliance, identify problems, and optimize overall performance.

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