Device diagnostics,right in your browser

Free tools to test your webcam, mic, keyboard, screen, mouse, and speakers. No downloads, no sign-ups. All tests run locally.

100% private
No downloads
Instant results

Input Devices

Keyboard Test

All keys, N-key rollover, stuck keys

Start Test

Mouse Test

Buttons, scroll, polling rate

Start Test

Touch Test

Touchscreen, gestures, multi-touch support

Start Test

Gamepad Test

Buttons, axes, haptic feedback

Start Test

Audio & Video

Webcam Test

Resolution, FPS, video quality

Start Test

Mic Test

Volume, sample rate, input quality

Start Test

Speaker Test

Left/right channels, frequency

Start Test

Display

Screen Test

Resolution, dead pixels, HDR

Start Test

WebGL / GPU Test

GPU vendor, renderer, capabilities

Start Test

Advanced Tools

Keyboard Latency Test

Measure key press response time

Start Test

Polling Rate Test

Estimate mouse polling rate in Hz

Start Test

Audio Frequency Test

Hearing range & speaker frequency response

Start Test

Network Speed Test

Connection speed, latency, and jitter

Start Test

Refresh Rate Test

Detect your display refresh rate (Hz)

Start Test

Battery Health Check

Check battery level, status, and health estimate

Start Test

Color Accuracy Test

Test display color quality, contrast & banding

Start Test

USB Device Info

View connected USB devices and details

Start Test

Bluetooth Scanner

Scan and detect Bluetooth devices

Start Test

Typing Speed Test

Measure WPM and typing accuracy

Start Test

CPU/GPU Benchmark

Test browser compute and rendering performance

Start Test

Mouse Chattering Test

Detect double-click (chattering) issues by analyzing click intervals.

Start Test

NKRO Test

Test keyboard N-Key Rollover and anti-ghosting capability.

Start Test

Color Blindness Test

Screen for red-green color vision deficiency with Ishihara plates

Start Test

WebXR / VR Device Test

Detect VR/AR headset & immersive WebXR capabilities

Start Test
666

tests completed

24

free diagnostic tools

11

ready-to-use scenarios

Scenarios

Video Call Check

Verify everything works before your next call

CameraMicSpeakerNetwork

Online Interview Check

Test your devices before a video interview

CameraMicSpeakerNetwork

Online Exam Check

Verify devices meet proctoring requirements

CameraMicScreenNetwork

Laptop Health Check

Full hardware check for buyers & sellers

ScreenKeyboardCameraMicSpeakerMouseTouch

Streaming Setup Check

Make sure your stream setup is ready

CameraMicScreenSpeaker

Gaming Check

Test your gaming peripherals and setup

KeyboardMouseScreenSpeakerGamepad

Audio Check

Quick mic & speaker check in under 5 seconds

MicSpeakerAudio Frequency

Work From Home Check

Test camera, mic, speakers, screen & internet

CameraMicSpeakerNetworkScreen

Content Creator Check

Test mic, camera, audio & network for recording

MicCameraAudio FrequencyNetwork

Esports Readiness Check

Verify competitive gaming equipment

Polling RateKeyboard LatencyRefresh RateMouseNetwork

Used Device Check

Full hardware test before buying used

ScreenKeyboardTouchSpeakerMicCameraNetworkBattery

Not sure where to start?Full Device Check →

Frequently Asked Questions

What hardware can ProbeCheck test?

ProbeCheck offers 20+ online diagnostic tools: webcam test, microphone test, full keyboard test, mouse button and polling rate test, screen dead pixel check, speaker test, gamepad test, touchscreen test, WebGL/GPU performance test, network speed test, battery health check, and more. All tests run locally in your browser — no data is uploaded.

How do I test my computer hardware online?

Open ProbeCheck in your browser, select the device you want to test (camera, mic, keyboard, etc.), and click Start Test. Everything runs directly in the browser — no software download or installation required. Results and diagnostic suggestions appear instantly.

Is ProbeCheck safe to use?

Completely safe. All diagnostics run locally in your browser. No device data is uploaded to any server. ProbeCheck requires no account registration, installs no plugins or software, and provides 100% privacy protection.

Can I test all my devices at once?

Yes. Use the Full Device Check or Laptop Health Check scenario to run camera, microphone, speakers, keyboard, mouse, screen, and network tests in sequence — ideal for buying or selling used devices.

Does ProbeCheck work on phones and tablets?

Yes. Touchscreen test, screen test, webcam test, and network test all work on mobile browsers. Desktop-only features include keyboard test, mouse test, and USB device info.

How do I test my mouse polling rate?

Open the Polling Rate Test page and move your mouse as instructed for 5 seconds. The test estimates your mouse polling rate (Hz), identifying common rates like 125Hz, 500Hz, and 1000Hz — useful for gamers and office users verifying mouse performance.

How do I check if my keyboard works properly?

Open the Keyboard Test page and press every key to see if it's detected correctly. The test supports N-Key Rollover (NKRO) detection, stuck key detection, and key response time measurement — ideal for mechanical keyboard enthusiasts.

Can ProbeCheck detect dead pixels?

Yes. Open the Screen Test page and select dead pixel detection mode. It displays solid-color screens (white, black, red, green, blue) so you can visually inspect your screen for dead, stuck, or dark pixels.