Build a browser matrix, not a list of logos
A useful configuration includes browser family, version, operating system and, for mobile, device details. Desktop browser coverage describes browser environments, not a promise of physical laptops. Keep these choices explicit in your test plan.
Check behavior as well as appearance
Browser compatibility includes scripts, forms, menus, storage-dependent journeys and browser-specific behavior, as well as layout. Use the same task and expected outcome across your matrix so that the results are comparable.
Prioritize the paths that affect your product
Use audience analytics and your published support policy to choose a starting set. Give extra attention to checkout, authentication, lead forms and other high-value actions. Add versions or environments when a reported issue makes them relevant.
Make differences useful to the person fixing them
Record the exact browser/version, OS, URL and state at the start of the check. Include a short sequence of steps and the expected outcome. Note whether the same steps pass in another configuration, which gives the team a practical comparison.
Your testing checklist
- Review navigation, menus and dialogs
- Complete the key form or transaction
- Check validation and recovery after an error
- Verify the layout and fonts remain usable
- Test keyboard paths and visible focus in desktop journeys
- Compare the same task on supported mobile browsers
A practical workflow
Set the support target
Name the browsers, versions and operating systems your product is intended to support.
Choose a shared regression journey
Use one consistent task and pass condition across the matrix.
Record and retest differences
File configuration-specific issues and verify their fixes on affected environments.
Common questions
Cross-browser testing focuses on behavior and compatibility across browser environments. Responsive testing focuses on how layouts and interactions adapt to screen sizes, orientation and zoom. A release plan often needs both.
Include them when your website serves mobile users. Record the browser, OS and device instead of assuming desktop results cover a phone.
Start with a documented support target and audience data. Add older versions or unusual configurations when they are part of your support policy or linked to a real customer issue.
Technical references
Official documentation for the underlying testing concepts. Available capabilities vary by provider and setup.
AWS Device Farm overviewSauce Labs live cross-browser testingBrowserStack cross-browser testing