How do you troubleshoot a web application that works in one browser but not another?

When a web application functions correctly in one browser but not another, the issue often lies in browser compatibility. Start by using each browser’s developer tools to inspect JavaScript errors, CSS rendering issues, and HTML validation problems.

Make sure your code adheres to modern web standards and avoid using browser-specific features unless they’re properly supported with fallbacks or polyfills. Utilize compatibility tools like Can I use to verify feature support across different browsers.

Thorough cross-browser testing is essential for a consistent user experience. Explore our full guide on how to fix browser-specific web app issues.