Testing Websites In Different Browsers: Strategies And Tools

Cross-browser testing is essential in web development to ensure a website or web application works properly. This is crucial because rendering engines, versions, and configurations affect how browsers interpret and display web content. It is essential to test website in different browsers to ensure a smooth user experience.

Since browsers are constantly changing and improving, a website must work well on all major platforms. This consistency increases audience size, boosts user satisfaction, and enhances search engine optimization for the website. Differences in browser support could result from the development of web technologies and standards, which could affect the interactive elements’ functionality and layout.

Cross-browser testing has to be done thoroughly and methodically in order to address these issues. A combination of tools, best practices, and automated and manual testing techniques must be used. By giving this important component of web development top consideration, developers can make sure that their websites provide a reliable, consistent user experience for all users, regardless of their chosen browser.

Key Features of Cross-Browser Testing

Here are some of the key features of cross browser testing – 

  • Functionality testing: Verifying that every feature of the website functions properly in various browsers. This entails verifying that data processing, navigation, forms, and other systems function as intended.
  • Layout and Design Testing: Verifying that the website’s visual elements display correctly in various browsers. This includes CSS properties for fonts, alignments, colors, and responsive design breakpoints.
  • Assessment of performance: Making sure that users have a smooth experience by testing how quickly and responsively the website loads in different browsers.
  • Browser compatibility: Finding differences in HTML, CSS, and JavaScript interpretation.  This matters because browsers employ various rendering engines, which might affect web page look.
  • Accessibility testing: Ensuring a website is accessible to all browser users, including those with disabilities.  This includes screen reader compatibility and keyboard navigation.

Cross-Browser Testing Methods

Cross-browser testing ensures a website works well on all browsers and devices. To find and fix compatibility problems, a variety of procedures, instruments, and planning are used. The following tactics will help your cross-browser testing efforts be more successful:

1. Prioritize Browsers and Devices

  • Analyze User Analytics: Use analytics data to identify the most commonly used browsers and devices among your audience. Prioritize these for your testing.
  • Global Browser Usage: Consider global browser usage statistics to ensure coverage of popular browsers. When designing your testing plan, consider the preferences and geographic location of your target audience.

2. Boost Productivity With Automation

  • Automated Testing technologies: Use technologies like Selenium, WebDriver, or Puppeteer for repetitive and time-consuming tests.
  • Continuous Integration (CI): Integrate it into your pipeline to automate testing of each build in a variety of browsers.
  • Automated smoke testing: Use this technique to rapidly verify that your website’s most important features work across a range of browsers.

3. Apply Techniques for Responsive Design

  • Flexible Layouts: Use fluid grids and images to make your website responsive.
  • Media Queries: Apply styles based on device width, height, and resolution with CSS media queries.

4. Accept Graceful Degradation and Progressive Enhancement

  • Progressive Enhancement: Begin with a browser-compatible user experience and improve it for advanced browsers.
  • Graceful Degradation: Ensure that your website functions properly on outdated browsers, even if some features are not available.

5. Manual and Exploratory Testing

  • Examine User Journeys: Carry out manual testing to investigate various user journeys and experience your website as your target audience would.
  • Visual Regression Testing: To identify problems that automated tests might overlook, manually verify that visual consistency is maintained across browsers and devices.

6. Cross-Browser Examining Instruments and Systems

  • Cloud-Based Platforms: Use cloud-based testing platforms like LambdaTest to access a range of browsers and devices without maintaining a physical device lab.
  • Open Source Tools: Look into integrating automated and manual testing using open-source tools into your workflow.

7. Regularly Update Testing Environments

  • Browser and OS Updates: Regularly update the browsers and operating systems in your test environments to reflect the latest versions used by your audience.
  • Device Addition: Continually add new devices to your testing pool, especially those gaining popularity among your users.

8. Involve Real Users

  • Beta testing: Provide your website to a select group of people who are part of your target market and get their input on usability and browser compatibility.
  • User Feedback Tools: Put in place mechanisms to get instantaneous user feedback regarding their browser-related experiences.

9. Collaboration and Documentation

  • Testing Records: To guarantee transparency and consistency in your testing endeavors, keep thorough records of your testing procedures, outcomes, and solutions.
  • Collaborate Across Teams: Encourage developers, designers, and testers to share ideas and fix cross-browser compatibility issues.

Cross-Browser Testing Tools

There are several free and open-source cross-browser testing tools. These tools allow automated and manual testing to ensure your website works on all browsers and devices. 

Here are some popular free and open-source cross-browser testing tools:

  1. Selenium: An effective browser automation tool that supports multiple programming languages and works with testing frameworks to automate cross-browser testing.
  2. WebDriverIO – A customizable testing framework built on Node.js. It supports other browser control engines in addition to Selenium and offers simple-to-use APIs for creating automated browser tests.
  3. Cypress – Though not completely open source for all its features, Cypress offers a core test automation framework that’s free and open source. It’s known for its developer-friendly setup and fast execution.
  4. Karma – A test runner created by the AngularJS team that is ideal for web application testing, supporting multiple browsers with just a single command.
  5. Browserling – A live interactive cross-browser testing service that offers limited free access to various browsers for manual testing.
  6. Responsive Design Checker – While not a full cross-browser testing tool, it helps quickly check how a website looks on different device sizes, which is a critical aspect of cross-browser testing.
  7. Firebug (Now integrated into Firefox Developer Tools) – Initially a separate extension, Firebug laid the groundwork for modern browser debugging tools. Firefox Developer Tools now incorporate its features, offering robust debugging capabilities across different web technologies.
  8. Chrome DevTools – Not open source, but free integrated into Google Chrome, providing web development and debugging tools.
  9. WAVE – Evaluation tools to make web content more accessible to disabled people. It includes browser extensions for Chrome and Firefox.
  10. Axe-core – An open-source library and tool for accessibility testing. It can be integrated into your testing process to automate accessibility checks.

These tools, spanning from automated testing frameworks to manual and accessibility testing supports, offer robust solutions for ensuring your website or application performs well across all browsers without the need for commercial software.

List of Top Techniques for Cross-Browser Testing

Use cross-browser testing best practices to ensure your website or web app works well on all browsers and devices. These cross-browser testing tips are essential:

1. Recognize Your Audience

  • Analyze Analytics: Find out which browsers, versions, and devices are most popular with your users by using web analytics. Give these top priority in your testing plan.
  • Research on Your Target Audience: Take into account the unique requirements and preferences of your audience, as these factors may influence the browsers and devices that they choose.

2. Create a Plan for Testing

  • Define Your Examination: List the devices, browser versions, and other configurations you will test.
  • Test Often and Early: Begin testing as soon as possible during the development phase and keep up the testing until the project is completed.

3. Apply the rules for responsive design.

  • Use Layouts: Fluid grid layouts can be used to give users the same experience on all devices because they can be adjusted to fit any screen size.
  • Media Queries: Use CSS media queries to set different styling rules for each device based on its width, height, and layout.

4. Boost Productivity with Automation

  • Tools for Automated Testing: Use WebDriverIO, Cypress, or Selenium to automate repetitive and time-consuming tests. 
  • Continuous Integration: Include automated tests in your CI/CD pipeline to minimize manual testing effort and spot issues early.

5. Give critical area manual testing top priority.

  • Exploratory Testing: To investigate intricate user interactions and visually striking elements that are challenging to automate, carry out manual testing.
  • Experiments on Real Devices: Whenever possible, conduct tests on real devices to ensure the most accurate representation of the user experience.

6. Embrace Progressive Enhancement

  • Basic Functionality for All: Ensure that the core functionality of your site is accessible on older browsers and devices, even if some advanced features are not supported.
  • Enhanced Experience: Gradually add more sophisticated features and designs for browsers and devices that can support them.

7. Perform Visual Regression Testing

  • Screenshots and Comparisons: To find differences in the layout and design of your website, use tools to capture screenshots of it in various browsers.
  • Automate Visual Checks: To automatically identify visual alterations or anomalies, incorporate visual regression testing tools into your testing suite.

8. Verify Compliance with Accessibility

  • Web accessibility guidelines: Follow established web accessibility guidelines (such as WCAG) to ensure that your website is accessible to people with disabilities across all browsers.
  • Tools for Accessibility Testing: Use applications like WAVE or axe-core to automate accessibility checks.

9. Organize and Log Problems Clearly

  • Bug tracking: To record, rank, and handle problems found during testing, make use of a bug tracking system.
  • Teamwork: To effectively handle and settle compatibility problems, promote candid dialogue and teamwork among developers, designers, and testers.

10. Keep Up with Browser Updates

  • Track Browser Developments: Stay informed about the most recent updates and modifications to browsers, as these may impact the appearance and functionality of your website.
  • Change Your Testing Schedules: As new browser versions and gadgets come out, you should regularly add them to your testing plan.

Cross-browser app testing is a very crucial part of the web application development process. One must ensure the app works smoothly across different OS, browsers, and devices. 

To make this happen, online platforms like LambdaTest make cross-browser app testing easier, faster, and more effective. Web developers and QA testers must ensure websites and web apps work properly on more browsers, operating systems, and devices. This powerful tool solves that problem.

Real-time live testing sessions with LambdaTest will let you get feedback immediately and fix bugs in real-time. This tool is great for finding and fixing problems quickly and cuts testing rounds by a large amount.

You can use LambdaTest for automatic speed and efficiency or human testing for more in-depth information. Use tools like Selenium, Cypress, Playwright, and TestCafe to automate your testing, or do it by hand to ensure your app looks and works how you want it to on all browsers and devices.

Members of a team can easily share test results, photos, and video records using LambdaTest. Also, it works with well-known tools for managing projects and finding bugs, making reporting and fixing bugs faster. It makes team communication simple and effective.


Cross-browser testing is an important part of web development because it makes sure that all computers offer the same high-quality online experience. Of the many computers out there, each has its own rendering engine and version of the site.

Cross-browser testing is very important and can’t be stressed enough. It is the key to making sure that every website visitor gets the style, features, and speed they expect. Developers may find and fix compatibility problems that might otherwise impair a website’s usability or even damage a brand’s reputation by adopting cross-browser testing. 

This methodical testing strategy helps to maximize user engagement, raise happiness, and eventually propel success in the digital space.

Additionally, cross-browser testing is essential to accessibility since it enables users with various abilities and preferences to access and use digital content. This inclusive method highlights the need of cross-browser testing in contemporary web development by expanding the audience reach while adhering to ethical and legal requirements.

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