20 free tests that run entirely inside your browser camera test, webcam test, microphone, speakers, keyboard, display, network and full hardware benchmarks. Nothing installs, nothing uploads, and you can stop any test at any time.
The checks people run most often before a call, a stream or a repair.
Confirm your mic is picking up sound, and watch a live input meter and waveform.
Play left, right and stereo tones to verify both channels of your speakers or headphones.
Press any key and see it register instantly — spot dead keys, stuck keys and ghosting.
Measure download speed, latency and jitter to see if your connection can hold a video call.
One combined check of camera, microphone, speakers and network before you join a call.
Every tool is grouped by what it checks, so you can go straight to the hardware you’re troubleshooting.
See exactly which browser permissions this site has, and reset the ones that are blocking your hardware.
Confirm your mic is picking up sound, and watch a live input meter and waveform.
Play left, right and stereo tones to verify both channels of your speakers or headphones.
Press any key and see it register instantly — spot dead keys, stuck keys and ghosting.
Full-screen colour, gradient and dead-pixel checks plus your real screen resolution.
Verify every mouse button, the scroll wheel, pointer tracking and multi-touch input.
Measure download speed, latency and jitter to see if your connection can hold a video call.
Identify your graphics chip and run a live WebGL stress test to measure rendering headroom.
Run single-core and multi-core JavaScript workloads to score your processor in the browser.
Measure allocation and read/write throughput, and see how much memory your browser will give you.
Check available browser storage quota and measure read/write speed to local storage.
One combined check of camera, microphone, speakers and network before you join a call.
Send yourself a real browser notification to confirm alerts actually reach your desktop.
Print a calibrated test page with colour bars, greyscale ramp and alignment marks.
See the public IP address, approximate location and network your browser is presenting.
A full readout of your browser, engine, operating system, screen and feature support.
Check HTTPS, cookies, Do Not Track, secure context and what your browser leaks to sites.
Read accelerometer, gyroscope and orientation data live from your phone or tablet.
Detect connected MIDI devices and watch note and controller messages arrive in real time.
List every camera, microphone and speaker your browser can currently see.
A browser device test uses the same web APIs a video call would use, so a pass here means the same hardware works in Zoom, Meet, Teams or Discord.
Most “my camera is not working” reports are really blocked permissions. The Permissions Test shows exactly what this site is allowed to use and how to reset a blocked prompt in your browser.
Use the homepage camera test for picture, resolution and frame rate, the microphone test for input levels, and the speaker test for left and right channels.
The Meeting Ready Check bundles camera, microphone, speakers and connection into a single one-minute pass so you can join with confidence.
Answers to the most common questions about our browser device tests.
No. Every test on this page runs inside your browser using standard web APIs. There is nothing to download, no extension to add and no account to create.
No. Camera and microphone streams are processed locally in your browser and never leave your device. We do not record, store or transmit any audio or video.
If you are preparing for a video call, start with the Meeting Ready Check — it tests camera, microphone, speakers and network in one pass. For a single broken device, jump straight to that device's test.
Yes. Camera, microphone, speaker, display, touch, sensor and network tests all work on modern mobile browsers. A few tests such as MIDI and controller support depend on the browser and hardware.
Some browsers restrict certain APIs. Safari, for example, does not implement Web MIDI. Try the same test in Chrome or Edge, and check the Permissions Test to make sure nothing is blocked.
Our troubleshooting guides walk through the exact fixes for a camera that won’t start, a mic nobody can hear, missing sound, Wi-Fi dropouts and overheating laptops on Windows, macOS, Android and iOS.