Free browser hardware diagnostics
Test your devices instantly in the browser
Webcam, microphone, keyboard, and more, private, fast, and free. No downloads. No sign-up. Built for accurate results on every modern browser.
Browser-based device testing tools · No downloads · Privacy-first
Popular
Popular device tests
What people open most when something feels off.
Camera Tests
Webcam Test
Check your camera feed, resolution, and permissions in the browser.
Camera Tests
Camera Resolution Test
See the actual capture resolution your browser and camera negotiate.
Camera Tests
Camera Mirror Test
Free online camera mirror test: compare mirrored self-view vs natural preview before Zoom, Meet, or recordings. Live webcam flip in your browser.
Audio Tests
Microphone Test
Test microphone input levels and device selection.
Audio Tests
Speaker Test
Play channel and frequency checks for your speakers.
Audio Tests
Headphone Test
Free online headphone test for left/right channels, stereo balance, and earcup isolation. Works with wired and Bluetooth headphones in your browser.
Audio Tests
Stereo Test
Verify stereo imaging with left, right, and center tones in your browser.
Audio Tests
Noise Level Meter
Measure relative ambient noise from your microphone in the browser.
Input Device Tests
Keyboard Test
Verify every key press, including modifiers and special keys.
Input Device Tests
Keyboard Ghosting Test
Hold multiple keys to see which combinations register without ghosting.
Input Device Tests
Typing Test
Measure typing speed and accuracy with a short in-browser passage.
Input Device Tests
Mouse Test
Test mouse buttons, scroll wheel, and pointer tracking.
Controller Tests
Gamepad Test
Detect connected controllers and verify buttons via the Gamepad API.
Controller Tests
Joystick Test
Visualize analog stick axes, centering, and range of motion.
Display Tests
Dead Pixel Test
Full-screen solid colors to visually spot dead pixels on your monitor.
Display Tests
Refresh Rate Test
Estimate display refresh from animation timing in the browser. Not a lab Hz measurement.
Display Tests
Color Test
Solid primary and secondary color fields for visual panel inspection.
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
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.
Network Tools
IP Address
Show your public IP address as seen by HTTP lookups and DeviceHub APIs.
Network Tools
IPv6 Test
Check whether your browser can reach IPv4 and IPv6 echo endpoints.
Network Tools
DNS Privacy Check
Best-effort DNS privacy smoke: public IP plus DNS-over-HTTPS. Not a full ISP DNS leak lab.
Network Tools
WebRTC Leak Test
Inspect WebRTC ICE candidates for IPs that may bypass your VPN path.
Hardware Information
Device Information
View viewport, pixel ratio, and device capability signals.
Categories
All tool categories
Jump straight to the hardware area you need to diagnose.
Camera Tests
Webcam previews, resolution, FPS, permissions, and camera device details. 8 tools in this category.
Audio Tests
Microphone, speaker, headphone, and channel diagnostics in the browser. 13 tools in this category.
Input Device Tests
Keyboard, mouse, and pointer hardware checks without installing software. 10 tools in this category.
Controller Tests
Gamepad, joystick, trigger, and vibration tests via the Gamepad API. 7 tools in this category.
Display Tests
Dead pixels, color, contrast, refresh, and monitor uniformity checks. 15 tools in this category.
Browser Diagnostics
Browser identity, features, storage, clipboard, and web platform APIs. 15 tools in this category.
Network Tools
IP, DNS leak, WebRTC leak, headers, and connection diagnostics. 8 tools in this category.
Hardware Information
CPU, GPU, RAM, battery, and screen capability signals from the browser. 7 tools in this category.
Mobile Device Tests
Touch, sensors, GPS, orientation, and mobile-specific capability checks. 9 tools in this category.
Accessibility Tools
Color vision, contrast, and accessibility-oriented browser checks. 8 tools in this category.
Device Calculators
PPI, DPI, screen size, viewing distance, and resolution calculators. 7 tools in this category.
Why DeviceHub
Built for speed, clarity, and trust
Everything about DeviceHub is optimized for organic search traffic and real-world device troubleshooting.
Instant in-browser tests
No downloads or plugins. Open a tool and get results in seconds.
Clear troubleshooting
Every tool pairs diagnostics with FAQs and common-fix paths.
Privacy by design
Device streams stay local in your browser whenever APIs allow.
Mobile-first accessibility
Keyboardable UI, semantic HTML, and WCAG-minded contrast.
How it works
Three steps to a clear answer
Open a tool, grant permission if asked, and read the live results in your browser.
01
Pick a diagnostic
Choose webcam, microphone, keyboard, or another test from the catalog.
02
Allow access when needed
Your browser asks for camera or mic permission. You stay in control.
03
Read local results
Previews, meters, and status panels update in this tab, no download required.
Privacy promise
Your hardware data stays with you
DeviceHub is privacy-first. We do not sell personal device streams, and camera or microphone access is only used for the active test in your tab.
Guides
Latest guides
Documentation that pairs with DeviceHub tools.
Updated
Recently updated tools
Diagnostics with the newest docs and template improvements.
Camera Tests
Camera Mirror Test
Free online camera mirror test: compare mirrored self-view vs natural preview before Zoom, Meet, or recordings. Live webcam flip in your browser.
Audio Tests
Headphone Test
Free online headphone test for left/right channels, stereo balance, and earcup isolation. Works with wired and Bluetooth headphones in your browser.
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.
Mobile Device Tests
Magnetometer Test
Free magnetometer test for phones: probe magnetic field (µT) support in the browser. Honest unsupported on most desktops and Safari; try Android Chrome.
Compatibility
Supported browsers
Optimized for modern engines with graceful degradation elsewhere.
Chrome
Latest stable
Firefox
Latest stable
Safari
Latest stable
Edge
Latest stable
By the numbers
Diagnostics people rely on
Built for fast, private hardware checks in every modern browser.
8+
Hardware tools
Growing toolkit
0
Downloads required
100% browser-based
4
Major browsers
Chrome, Firefox, Safari, Edge
100%
Free core tests
No paywall to start
Help
Frequently asked questions
Quick answers before you start testing.
Do I need to download software to test my devices?
Is DeviceHub free to use?
Does DeviceHub upload my camera or microphone data?
Which browsers are supported?
Why is my webcam or microphone blocked?
Can I use DeviceHub on mobile?
Ready to test your devices?
Jump into a free diagnostic tool and get results in your browser.