Webcam Test
Start a live preview to check that your camera works and see the resolution and frame rate it delivers.
Webcam and Mic Test
Press Start test and allow access once to check your camera and microphone together. You see a live preview and a microphone level meter, and the status line says whether each one works.
The camera preview and the microphone level are shown only on this page. Nothing is recorded, stored or uploaded.
Camera off · Microphone off
Names appear once you allow access.
- Device
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- Resolution
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- Frame rate
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Names appear once you allow access.
- Device
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- Peak
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Runs entirely in your browser. Test results, audio and video never leave your device.
How to test your camera and mic together
- Press Start test and allow camera and microphone access when the browser asks. One prompt covers both.
- Check your picture in the preview. It starts mirrored; press Mirror to see it the way others see it.
- Speak at your normal volume. The level bar follows your voice and turns red, with the word Clipping, if the sound is too loud.
- Read the status line. Camera working · Microphone working means both send a signal; otherwise it names the device with the problem.
- To try another device, choose it from the Camera or Microphone list. Only that device restarts.
- Press Stop when you are done. Switching to another tab also releases both, so your call app can use them.
How do I test my camera and microphone at the same time?
You can test your camera and microphone at the same time by opening both in one browser request and checking for a moving picture and a level that rises as you speak. Together they show that your browser receives video and sound, which a video call needs. They do not show how clear you look or sound to others.
What the status line means
| Status | What it means | What to try |
|---|---|---|
| Camera working · Microphone working | Video frames reach the preview, and the microphone picked up sound above −60 dB. | Nothing to fix. Choose the same camera and microphone in your call app. |
| Microphone waiting for sound | The microphone is open, but only silence arrives. | Speak, then check the mute switch or key and your system’s input volume. |
| Camera blocked or Microphone blocked | The browser or your system refused access. | Allow it for this site and in your system’s privacy settings. See how to allow camera and microphone access. |
| No camera found or No microphone found | The browser cannot see a device of that kind. | Connect it, and check that it is enabled in your system’s settings. |
| Camera may be in use by another app | The device was found but could not start. | Close call apps and other browsers that may be using it, then press Start test again. |
| Camera connection lost | The device stopped during the test, for example when it was unplugged. | Reconnect it and press Start test again. |
How to get ready for a video call or online exam
- Connect the headset or webcam you plan to use before you open the call app, so it appears in the app’s device list.
- Close other apps that may be using the camera or microphone, such as a second call app.
- Face a window or a lamp. Webcams need plenty of light, and a bright window behind you darkens your face.
- Wear headphones if you can, so the microphone does not pick up the other people from your speakers.
- In the call app, choose the camera and microphone that worked here.
What this test can detect
- Whether your camera sends video and your microphone picks up sound, checked together after one permission prompt.
- Which device has the problem when only one works: blocked, not found, in use by another app, or disconnected.
- Which camera and microphone the browser opened, shown under Device, including the ones behind Default camera and Default microphone.
- The resolution the browser receives from the camera and the frame rate measured in the preview.
- A microphone level that barely moves, or one so loud that it clips, shown by a red bar and the word Clipping.
How it works
Start test asks for the camera and the microphone in one getUserMedia request, so the browser shows one prompt. The camera is asked for an ideal 1920 × 1080 and starts at the closest size it supports. If the request fails, the page tries each device on its own to find the one with the problem, without asking again for access you refused.
Frame rate counts the frames shown over the last second with requestVideoFrameCallback. The sound goes only to a Web Audio analyzer, which turns the latest 2048 samples into an RMS level in dBFS, from −60 dB to 0 dB; a sample above 98% of full scale counts as clipping.
Limitations
- A working result shows that your browser receives video and sound. It does not show how clear you look or sound to others, which also depends on light, distance, your network and the call app.
- Resolution shows what the browser receives for a 1920 × 1080 request. The camera may support more; the Webcam Resolution Test asks for sizes up to 3840 × 2160.
- The level is in dBFS, relative to the loudest signal the input can carry, not a sound level in dB SPL. Chrome, Edge and Firefox turn on echo cancellation, noise suppression and automatic gain control by default, and the page keeps those defaults.
- Frame rate counts frames shown on your screen, so it cannot exceed your display’s refresh rate.
- Device names appear only after you allow access, and a call app or exam software can pick different devices than your browser.
Frequently asked questions
Why do my camera and mic work here but not in Zoom, Teams or Google Meet?
Usually because the app is set to other devices or cannot reach them. If both work here, choose the camera and microphone named under Device in the app’s settings, close other apps that might hold them, and allow the app in your system’s privacy settings.
Can I use this before an online exam or a job interview?
Yes, as a first check that your browser can use your camera and microphone. Proctoring software and lockdown browsers run their own checks, so also run the test your exam provider gives you.
Why does the test stop when I switch tabs?
So your call or exam app can use the camera and microphone. On Windows, a camera that one app is using often cannot be opened by another. Press Start test again when you come back.
Can I hear myself during the test?
No. The microphone only feeds the level meter and is never played back, so there is no echo or feedback. To hear how you sound, record a short clip with the Mic Test with Playback.
Does the webcam and mic test work on a phone?
Yes, in a mobile browser such as Safari or Chrome. Allow access when asked, then choose the front or back camera from the Camera list once the names appear.
Is my video or audio recorded or sent anywhere?
No. The video goes straight to the preview and the sound only to the level meter, both on this page. Nothing is recorded, stored or uploaded, and Stop releases both devices. The privacy policy explains how the site handles data.