Category
Browser Diagnostics
Browser tools focus on the software session: identity and features, storage and cookies, graphics APIs, and related web-platform checks.
Start with Browser Information for engine context, Browser Storage Test for quota and local or session probes, and the dedicated API tools when a single capability is under test. Use Device Information in Hardware for viewport and hardware hints.
Featured
Featured browser diagnostics
Start here for the most common checks in this category.
Browser Diagnostics
Browser Information
Inspect browser, engine, and feature support details.
Browser Diagnostics
Browser Features
Probe web platform API availability in your current browser.
Browser Diagnostics
WebGL Test
Probe WebGL / WebGL2 contexts and report GPU renderer strings.
Browser Diagnostics
User Agent
Inspect navigator.userAgent and Client Hints when the browser exposes them.
Catalog
All browser diagnostics
15 published tools in this category.
Browser Diagnostics
Browser Information
Inspect browser, engine, and feature support details.
Browser Diagnostics
Screen Resolution
View screen, window, and viewport resolution with device pixel ratio.
Browser Diagnostics
User Agent
Inspect navigator.userAgent and Client Hints when the browser exposes them.
Browser Diagnostics
Browser Features
Probe web platform API availability in your current browser.
Browser Diagnostics
Browser Storage Test
Check Storage API estimate, persistence, and quota signals.
Browser Diagnostics
Cookie Test
Verify document.cookie write, read, and delete in this origin.
Browser Diagnostics
JavaScript Test
Run a quick ECMAScript and runtime feature smoke test in-page.
Browser Diagnostics
Clipboard Test
Write and read clipboard text with the Async Clipboard API.
Browser Diagnostics
WebRTC Test
Check WebRTC support and gather basic peer-connection signals.
Browser Diagnostics
WebGPU Test
Detect WebGPU and request an adapter when the browser supports it.
Browser Diagnostics
WebGL Test
Probe WebGL / WebGL2 contexts and report GPU renderer strings.
Browser Diagnostics
WebUSB Test
Free WebUSB test online: check Chrome/Edge support, list authorized devices, and open the USB picker. Nothing is claimed or transferred. HTTPS required.
Browser Diagnostics
WebBluetooth Test
Check Web Bluetooth availability and optionally pick a BLE device. Limited browser support; no GATT session.
Browser Diagnostics
WebSerial Test
Check Web Serial availability and optionally pick a port. Desktop Chromium primarily; no data is read or written.
Browser Diagnostics
WebMIDI Test
Request MIDI access and list inputs/outputs the browser exposes.
FAQ
Browser Diagnostics FAQ
Common questions about this category of diagnostics.
Why is my user agent reduced?
Why do WebUSB, Web Bluetooth, or Web Serial fail in Safari or Firefox?
Do these tools upload my browser data?
Where is Device Information?
Guides
Buying & troubleshooting guides
Editorial docs and policies that pair with these tools.
- Browser Information tool
Live browser and feature matrix.
- How we test
How DeviceHub validates browser tools.
Explore
Related categories
Keep testing with adjacent DeviceHub hubs.
- Hardware Information
CPU, GPU, RAM, battery, and screen capability signals from the browser.
- Network Tools
IP, DNS leak, WebRTC leak, headers, and connection diagnostics.
- Camera Tests
Webcam previews, resolution, FPS, permissions, and camera device details.