Browser Compatibility: Test the Feature, Not the Brand
A page works in one browser but fails on a mobile browser's older engine. This guide gives you a small, testable way to approach the issue before changing a live system.
A practical workflow
- Check support for the exact web API and use progressive enhancement or a fallback.
- Test a representative device, keyboard navigation and reduced motion where relevant.
What to check
User-agent sniffing is brittle; feature detection and real-device tests are usually more reliable. Compare the result with the original problem and record what changed. If a measurement or test does not support the change, revisit the assumption rather than adding more complexity.
Keep the experiment small enough to reverse. Document the starting state, the change and the result so another person can repeat the process. Product menus and versions can change, so check the current documentation for your environment.
Official reference: Read the documentation.