What are the leading solutions for testing browser compatibility in legacy systems?

General Discussions
1

I’m working on a project that still needs to support some older browsers and legacy environments, and I’m trying to figure out the best cross browser testing tools or platforms to handle compatibility testing in that context.

Since some legacy browsers behave very differently from modern ones, I need tools that can reliably:

  • Run tests across older versions of browsers (IE, legacy Edge, ancient Firefox/Chrome builds, etc.)
  • Simulate legacy environments accurately
  • Integrate with automation frameworks or CI/CD where possible
  • Provide solid reporting to help pinpoint compatibility issues

Have you used any cross browser testing solutions that are especially good at handling legacy systems and older browser versions? I’d love to hear which ones worked well for you and why!

2

Testing legacy browsers requires platforms that emulate or provide older versions of IE, Edge, Firefox, and Chrome. Candidates should explain how these tools help detect rendering issues or functional discrepancies that modern browsers do not expose.

3

Integration with automated frameworks and CI/CD pipelines ensures efficiency. Candidates might discuss generating reports, logs, and visual screenshots to debug legacy-specific issues, emphasizing the need for reproducible and actionable testing outcomes.