What is Browser Feature Detector?

Browser Feature Detector is a comprehensive tool that scans your web browser to identify which modern Web APIs and features are supported. In seconds, you'll see exactly what your browser can and cannot do.

Modern web browsers come with hundreds of built-in capabilities - from basic storage to advanced hardware access. But not every browser supports every feature. Some APIs are experimental, some require secure contexts (HTTPS), and some are simply not implemented in certain browsers.

Privacy First: All feature detection runs entirely in your browser. No data is collected, stored, or sent to any server. The tool simply checks if certain JavaScript APIs exist in your browser's environment.

Table of Contents

1. What is Browser Feature Detector?
2. Who Needs This Tool?
3. What Features Are Detected?
4. How to Use Browser Feature Detector
5. Features and Capabilities
6. Feature Categories Overview
7. Frequently Asked Questions

Who Needs This Tool?

Web Developers

Quickly check which APIs are available before using them in your projects. Avoid compatibility issues early in development.

QA Testers

Verify browser capabilities across different devices and browsers. Document feature support for testing matrices.

Tech Enthusiasts

Discover what your browser is capable of. Explore cutting-edge web technologies and experimental features.

IT Support

Diagnose compatibility issues when web apps don't work as expected. Provide evidence-based troubleshooting.

What Features Are Detected?

The tool checks over 100 Web APIs organized into 18 categories, covering everything from basic storage to advanced hardware access:

Storage APIs

Data persistence and caching capabilities.

Cookies
LocalStorage & SessionStorage
IndexedDB
Cache API

Graphics & Media

Visual rendering and media processing.

Canvas & WebGL
WebGPU
Picture-in-Picture
Screen Capture

Audio APIs

Sound processing and voice capabilities.

Web Audio API
Speech Synthesis
Speech Recognition
Audio Recording

Network APIs

Communication and data transfer.

Fetch API
WebSocket
WebRTC
Server-Sent Events

Workers & Performance

Background processing and optimization.

Web Workers
Service Workers
WebAssembly
Performance APIs

Sensors & Hardware

Device sensors and hardware access.

Geolocation
Accelerometer & Gyroscope
Bluetooth & USB
NFC, MIDI, Gamepad

Comprehensive Coverage: Beyond these core categories, the tool also detects Notifications, Clipboard APIs, File System Access, Security features, Display controls, Observers, Web Platform APIs, Detection APIs, XR capabilities, and more.

How to Use Browser Feature Detector

Using the Browser Feature Detector is straightforward - most of the work happens automatically. Follow these steps to get the most out of the tool:

Open the Tool

Simply open this page in any web browser. The detection process starts immediately and automatically scans all features. No installation or configuration required.

Watch the Scan

You'll see each feature being checked one by one with real-time visual feedback:

A spinning loader appears while each feature is being tested
A green checkmark indicates the feature is supported
A red X indicates the feature is not supported
The score ring fills up as more features are detected

Explore Results

Once scanning completes, you can explore the results in several ways:

Filter by Status

All - Every feature regardless of support
Supported - Only features your browser supports
Unsupported - Only features your browser lacks

Search by Name

Type in the search box to find specific features. For example, search "bluetooth" to quickly find Web Bluetooth support.

Collapse Categories

Click any category header to collapse or expand it. Use the expand/collapse all buttons for quick navigation.

Learn About Features

Hover over any feature name to see a tooltip explaining what that API does and common use cases.

Export Results

Share your results with others using multiple export formats:

Copy Report - Copies a text summary to your clipboard for quick sharing
JSON Export - Downloads a detailed JSON file with all feature data for programmatic analysis

Tips for Best Results: Test in multiple browsers (Chrome, Firefox, Safari, Edge) to compare capabilities. Some features require HTTPS - testing on localhost may show different results. Mobile browsers often have different capabilities than desktop versions, and Private/Incognito mode may restrict some APIs for privacy.

Features and Capabilities

Browser Feature Detector offers a comprehensive view of your browser's capabilities with these powerful features:

Instant Scanning & Visual Feedback

The moment you open the tool, it begins scanning over 100 Web APIs. Each feature is tested individually using standard JavaScript feature detection techniques. The entire scan completes in just a few seconds.

Visual Score Summary

A circular progress ring shows your browser's feature score at a glance:

Displays the number of supported features out of total
Shows the percentage score prominently
Identifies your browser name and platform

Organized Categories & Smart Filtering

Features are grouped into 18 logical categories for easy browsing, covering everything from Storage APIs to XR capabilities.

Smart Filtering Options

Quickly narrow down results using:

Status filters - Show all, only supported, or only unsupported
Text search - Find features by name instantly
Combined filtering - Use both together for precise results

Helpful Tooltips

Every feature includes a tooltip that explains what the API does in plain English and provides real-world use cases (games, offline apps, video calls, etc.).

Export Options

Share your results easily with multiple export formats:

Copy Report

Text Format

Human-readable format
Quick sharing via email or chat
Easy to paste in documentation
Includes browser info and score

JSON Export

Machine-Readable

Full structured data
Timestamp included
Complete browser details
All feature statuses

Feature Categories Overview

A comprehensive breakdown of all 18 categories and what they cover:

Category	What It Covers
Storage APIs	Data persistence options (cookies, databases, caches)
Graphics & Media	Canvas, WebGL, video recording, screen capture
Audio APIs	Sound processing, text-to-speech, voice recognition
Network	HTTP requests, real-time communication, offline detection
Workers	Background processing, offline support, native-speed code
Sensors	Location, orientation, motion, environmental sensors
Hardware	Bluetooth, USB, Serial, NFC, MIDI, game controllers
Notifications	Push notifications, background sync, app badges
Clipboard	Copy/paste, touch events, keyboard access
File System	File reading, saving, drag-and-drop
Security	Encryption, authentication, permissions
Display	Fullscreen, screen orientation, wake lock
Observers	Intersection, resize, mutation, performance monitoring
Web Platform	History, sharing, payments, contacts
Detection APIs	Barcode, face, text recognition
XR	Virtual and augmented reality
Performance	Timing APIs, resource monitoring
Misc	Modules, animations, vibration, and more

Frequently Asked Questions

Why does my browser show some features as unsupported?

Not all browsers implement every Web API. Some reasons a feature might be unsupported:

Browser choice - Safari, Firefox, and Chrome have different feature sets
Browser version - Older versions lack newer APIs
Platform - Mobile browsers often have fewer features than desktop
Security context - Some APIs require HTTPS to work
Experimental status - Some APIs are only available behind flags

Why do Chrome and Edge show similar results?

Both Chrome and Edge are built on the Chromium engine, so they share most Web API implementations. Minor differences may exist due to version differences or vendor-specific features.

Can I enable unsupported features?

Some features can be enabled through browser settings:

Chrome - Visit chrome://flags to enable experimental features
Firefox - Visit about:config for advanced settings
Edge - Visit edge://flags for experimental features

Warning: Enabling experimental features may cause instability. Use at your own risk.

Why do some features require permissions?

Sensitive APIs like camera, microphone, and location require explicit user permission for privacy and security. The detector only checks if the API exists, not whether permission has been granted.

Is this tool accurate?

The tool uses standard JavaScript feature detection - checking if APIs exist in the browser's global objects. This is the same technique developers use in production code. However:

An API existing doesn't guarantee it works perfectly
Some APIs may exist but be disabled by policy
Hardware-dependent APIs (sensors, Bluetooth) may show as supported even if no hardware is present

Why is my score different on mobile?

Mobile browsers typically support fewer APIs than desktop browsers. This is due to:

Operating system restrictions (iOS limits what Safari can do)
Battery and performance considerations
Security policies on mobile platforms

Does this tool work offline?

Yes, once the page is loaded, all detection runs locally in your browser without any server communication. You can disconnect from the internet and the tool will still work.

Can websites detect these features without my knowledge?

Yes, any website can run these same checks. This is how web applications determine which features to use. It's a normal part of how the web works and doesn't expose any personal information.

What should I do if a web app doesn't work?

Use this tool to check if your browser supports the required APIs:

Check Requirements

Identify which features the app needs (usually mentioned in documentation)

Search Features

Search for those features in the detector

Take Action

If unsupported, try a different browser or update your current one