✦ FREE ONLINE DEVICE DIAGNOSTICS

DeviceDIY

Device diagnostics,
right in your browser.

Private by designNo downloadsInstant feedback
Run Quick Check →Explore all tests →
CameraMicrophoneKeyboardScreenMouseSpeaker

Choose a test

Pick a tool to get started. It only takes a moment.

11 free tools
Webcam Test OnlineCheck whether your webcam is sending video to your browser. Preview your camera, switch cameras when available, and troubleshoot a black screen.Start test →Microphone Test OnlineSpeak into your microphone and watch the live input meter. Record a short sample and play it back to check whether your voice is being captured.Start test →Speaker & Headphone TestPlay a short test tone to check whether sound comes through your speakers or headphones, including left and right stereo channels.Start test →Keyboard Test OnlinePress the keys on your physical keyboard to check which key presses reach your browser. See key names, codes and a count of detected keys.Start test →Dead Pixel & Screen TestInspect your display using solid full-screen colours. Look for tiny dots that stay dark, bright or the wrong colour.Start test →Mouse Test OnlineCheck mouse clicks, pointer movement and scrolling in one simple testing area. Useful for a USB mouse, wireless mouse or trackpad.Start test →Touchscreen Test OnlineTouch and drag your fingers across the test pad to see whether your browser detects taps, movement and multiple touch points.Start test →Camera & Microphone Test Before a CallRun one quick camera and microphone check before joining a video meeting. Confirm that your browser can receive video and audio input.Start test →↻Refresh Rate TestEstimate animation frame cadence and variation.Start test →✣Gamepad TestInspect controller buttons, triggers and sticks.Start test →✓Used Laptop CheckupInspection checklist with linked device tests.Start test →

Start with confidence

Ready for your next call in three simple checks.

Have an interview, online class or meeting coming up? The guided Quick Device Check walks through your camera, microphone and speakers, then gives you a clear summary of what worked.

Run Quick Device Check →

Simple testing. Privacy first.

Tests run locally in your browser. Camera and microphone access require your permission. This website does not upload your recordings, video, keyboard activity or test results.

✓ Nothing to install
✓ Permission-based access
✓ Straightforward results and troubleshooting

Free browser-based device tests

DeviceDIY offers quick checks for common problems before online meetings, remote interviews, calls and everyday use. Choose a test, follow the instructions and check whether your browser receives the expected input. Hardware tests can help you narrow down an issue but cannot guarantee that every device component is fault-free.

How online device tests work

Camera and microphone tools ask for browser permission before starting. The keyboard, mouse and touchscreen tests detect events received by the page. Speaker tests generate audio, while the screen test displays solid colours for visual inspection. No account or software installation is needed.

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How it works

Test first. Understand the result. Fix what matters.

01 · Choose a testPick the device you want to check and read the short instructions.
02 · Run it locallyAllow camera or microphone access only when a test needs it.
03 · Know the next stepSee what the browser detected and how to investigate a problem.
Are DeviceDIY tests really free?

Yes. The device tools are free to use in a compatible browser, with no account or installation required.

Can a website tell me my hardware is definitely working?

DeviceDIY can verify browser events, video and microphone input where supported, and play test tones for you to confirm. It cannot certify every hardware component or third-party application.

Does DeviceDIY upload my camera or microphone data?

The included tests run locally and do not upload camera frames or microphone recordings to DeviceDIY. Read the privacy page for limitations and hosting considerations.