Microphone Test
Tier ATest mic volume and input sensitivity with a live real-time audio waveform meter.
55 Free In-Browser Diagnostic Tools • Zero Data Uploads
Precision Device Diagnostics & Peripheral Testing Lab
Test your phone, laptop, or desktop PC screen, microphone, audio output, keyboard, mouse, and web connection. Transparent browser diagnostics with clear limitations and zero fake health scores.
Featured Diagnostic Tools
Directly test common hardware components in your browser.
Sound Test
Tier APlay acoustic chimes and pure sine tones to confirm stereo speaker playback.
Dead Pixel Test
Tier AFullscreen solid color cycler (RGBW/Black) to expose dead or stuck screen pixels.
Keyboard Tester
Tier AInteractive key matrix lights up pressed keys, function keys, and modifiers.
Mouse Button Tester
Tier ATest left, right, middle wheel, and side thumb buttons for click registration.
Webcam Test
Tier ALive local camera preview with detected stream resolution and FPS metrics.
Touchscreen Grid Test
Tier ADraw across an interactive matrix to find unresponsive dead spots on mobile screens.
Internet Speed Test
Tier BMeasure real-world download speed, upload rate, ping latency, and jitter.
Guided Workflow
Launch Wizard →
Full Device Check Wizard
Run a structured, multi-step health checkup on your device. Tests audio output, microphone sensitivity, screen pixels, keyboard/mouse input, webcam, and connection latency in a guided journey with a downloadable summary report.
✓ No overall fake score
✓ Skip any test
✓ Export JSON & PDF
✓ 100% Local processing
Browse Diagnostic Tools by Device
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Mobile Phone Tests
Touchscreen dead zones, multi-touch counts, front/rear cameras, accelerometer, gyroscope, and compass.
Explore Mobile Hub →💻
Laptop Tests
Keyboard keys, trackpad gestures, webcam preview, stereo speakers, and OS battery health reports.
Explore Laptop Hub →🖥
Desktop PC Tests
144Hz refresh rate, mouse double clicks, scroll wheel jump detection, mechanical keyboard rollover, and GPU tests.
Explore PC Hub →Browse by Diagnostic Need
Display & Visuals
Dead pixels, screen resolution, refresh rate (Hz), color contrast, and ghosting.
9 Tools →Input & Peripherals
Keyboard key matrix, mouse buttons, double-click chatter, gamepads, and touch.
12 Tools →Internet & Connectivity
Speed test, ping latency, request loss, Wi-Fi stability, and Web Bluetooth.
6 Tools →Mobile Sensors
GPS accuracy, digital compass, accelerometer vectors, and gyroscope rotation.
7 Tools →How It Works
01
Select a Diagnostic
Choose the specific component you want to verify—like a microphone, keyboard switch, or display pixel.
02
Trigger & Observe
Click start, grant browser permission when prompted, and observe real-time visual feedback and event meters.
03
Review Next Steps
Inspect honest results explaining what was observed, what it means, and verified operating system troubleshooting steps.
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Privacy-First Architecture: 100% Local In-Memory Processing
Your camera frames, microphone audio, keystrokes, and touch coordinates never leave your device. Zero cloud uploads, zero browser fingerprinting, and no account required. Read our Privacy Policy →
Frequently Asked Questions
Yes, for components exposed through official W3C browser APIs (such as keyboards, mice, touchscreens, gamepads, microphones, speakers, cameras, and display pixels). For low-level motherboard hardware like battery capacity, fan RPM, and CPU temperature, browsers are sandboxed for security; we provide verified operating system instructions rather than fake numbers.
Yes. Every tool across all 55 diagnostics is completely free with no paywalls, accounts, or subscriptions.
No. Arbitrary percentage scores (like "Your PC is 85% healthy") are deceptive marketing gimmicks. We provide honest, itemized counts of tested subsystems and verified observations.