SuperDevTools
EN

Webcam and mic test

Everything stays on your device: no image or sound is sent to or stored on the site. Access is only requested when you click, and "Stop" turns everything off.

Camera

The preview appears here after you click "Test camera".

Actual resolution
–
Frames per second
–

Microphone

Sound level –
Start the test to see whether sound is picked up.

Put headphones on before ticking this: with speakers, the sound loops back into the microphone and squeals (audio feedback).

Speakers

One beep plays on the left, then another on the right. With headphones, check that each beep comes from the right side.

Check your camera and microphone before you join

This webcam and mic test tells you in a minute whether your camera shows a picture, whether your microphone picks up your voice and whether your speakers play sound on both sides. Run it just before a video call with family, an online class, a remote job interview, a telehealth appointment or a live stream.

How to use it

  1. Camera. Click "Test camera" and accept the browser prompt. The preview appears mirrored, like a bathroom mirror; untick "Mirror image" to see the picture the way other people receive it. Under the preview, "Actual resolution" shows something like 1280 × 720 and "Frames per second" a value such as 30 fps.
  2. In "Requested resolution", choose 720p or 1080p. The tool compares the two: if you ask for 1080p and the camera only delivers 1280 × 720, the message says so plainly. "Camera in use" switches between cameras.
  3. "Take a photo" freezes a frame, and "Download photo (PNG)" saves it to your device. The photo is not mirrored.
  4. Microphone. Click "Test microphone" and talk. The "Sound level" bar moves, the waveform is drawn live and "Sound is being picked up." appears. A normal speaking voice at arm's length often reads between -35 and -20 dB, while a quiet room stays around -60 dB or lower.
  5. "Record 5 seconds" captures a short sample you can play back on the page or download.
  6. "Live monitoring (headphones)" sends the microphone straight to your ears. It is off by default: through speakers, the sound would loop back into the microphone and squeal (audio feedback).
  7. Speakers. "Sound left, then right" plays a low beep on the left, then a higher beep on the right. If both come from the same side, a cable is loose or the system balance setting is off-center.

Your picture and sound stay with you

Everything runs in your browser. No image and no sound is sent to or stored on the site: the tool processes everything in your browser and transmits nothing over the network. Access is only requested when you click a button, never when the page opens. The "Stop" button turns the camera and microphone off at once, and the tool also turns them off as soon as you switch tabs or leave the page.

Fixing common problems

  • Access denied. Click the icon to the left of the site address, allow the camera or microphone, then reload. If nothing changes, open your system's privacy settings: camera and microphone access must be allowed for the browser there too.
  • Camera already in use. Close the video call software or the tab holding it, then run the test again.
  • Wrong microphone selected. Pick the right one in "Microphone in use" and watch the bar react.
  • Cable or headset. Check the plug, try another port and look for a mute switch on the headset or its cable.
  • Black picture. Open the sliding privacy shutter or press the camera kill key that many laptops have.
  • Still nothing. Update your operating system and the camera and audio drivers, then restart.

Better picture, better sound

Face the light and never sit with a window behind you, or you will look like a dark silhouette. Put the camera at eye level, about an arm's length away. For sound, bring the microphone closer to your mouth (a headset mic beats the one in the screen bezel), shut the window and pick a quiet room.

Frequently asked questions

Why is the actual resolution lower than the one I asked for?

The camera may not go higher, or it may scale down in low light or on a slow USB connection. The tool shows what it really delivers, plus the maximum it reports when the browser provides it.

Does the site record my face or voice?

No. Nothing is sent to or kept on the site. The 5-second recording and the photo live on the page and disappear when you close it.

Why does the test stop when I switch tabs?

For your privacy: the camera and microphone never stay on while the page is out of sight. Come back and click the test button again.

Does it work on a phone?

Yes, in a recent browser. "Camera in use" lets you switch between the front and rear cameras.