Free Web API Compatibility Checker

Check your browser's support for Web APIs. Based on real feature detection, not database lookups. Results reflect actual browser capabilities.

Web API Compatibility Checker - Essential Frontend Tool

The Web API Compatibility Checker helps frontend developers quickly understand browser support for various Web APIs. Unlike caniuse and other database lookup tools, this tool uses actual feature detection by calling browser APIs, providing more accurate results that reflect real-world usage.

Why Check API Compatibility?

Prevent Feature Breakage - Confirm browser support before using new APIs
Plan Compatibility Strategy - Build progressive enhancement or graceful degradation plans
Discover New Features - Learn which new APIs your browser supports
Project Documentation - Export reports as compatibility documentation

FAQ

What is Web API compatibility checking?

Web API compatibility checking verifies whether a browser supports specific Web APIs. Frontend developers need to confirm browser compatibility before using new APIs to avoid features breaking in some browsers.

Which Web APIs are supported?

Covers 10 categories: Storage, Network, Media, Graphics, Device, Security, Performance, UI/Observer, Worker, and Emerging APIs — over 80 individual APIs tested.

Are the results accurate?

This tool uses actual feature detection by calling browser APIs, not database lookups. Results reflect the real support status of your current browser.

How to use the detection results?

Use results to confirm API availability, discover new features, plan compatibility strategies, and write documentation. Test in multiple target browsers for best results.

🔍 Web API Compatibility Checker