Comprehensive browser compatibility checker that tests support for modern web APIs, HTML5 features, CSS properties, and JavaScript capabilities. Identify which features are available and which are missing. Essential for web developers ensuring cross-browser compatibility.
Web standards evolve rapidly, with new APIs and features added regularly. Browser compatibility varies significantly, with some browsers supporting cutting-edge features while others lag behind. This tester helps you understand exactly which modern web features your browser supports, enabling you to make informed decisions about feature usage.
Start with the live tester below. Supporting details, FAQs, and troubleshooting guidance are placed after the tool so the main action is easier to find and use immediately.
Check which browser APIs and features are supported on your device.
Common problems
If the live tester does not behave as expected, these are the first checks most users should try before assuming the hardware is broken.
Check API support - see which features are available
Test in multiple browsers for comparison
Review feature detection results
Check for deprecated features
Comprehensive browser compatibility checker that tests support for modern web APIs, HTML5 features, CSS properties, and JavaScript capabilities. Identify which features are available and which are missing. Essential for web developers ensuring cross-browser compatibility.
Web standards evolve rapidly, with new APIs and features added regularly. Browser compatibility varies significantly, with some browsers supporting cutting-edge features while others lag behind. This tester helps you understand exactly which modern web features your browser supports, enabling you to make informed decisions about feature usage.
Test your keyboard input, detect dead keys, and verify all keys are working correctly.
Test mouse buttons, scroll wheel, pointer tracking, and touch input.
Test your microphone input levels in real-time. Verify microphone is working.
Test your speakers or headphones with reference tones.
Helpful questions
Use these answers to understand results, browser limitations, permissions, and sensible next troubleshooting steps.
Open the live browser compatibility test on this page and follow the prompts shown in the tester area. The tool runs directly in your browser, so you can check your device without installing additional desktop software or signing in.
Check browser permissions, confirm the device or browser feature is enabled, and reload the page if needed. Many browser-based testers depend on permission prompts, secure context support, or hardware access that must be approved before the test can run fully.
Web development - ensure cross-browser compatibility. It can help you confirm whether the issue is caused by the hardware itself, a browser permission setting, or a system configuration problem before you spend more time debugging.