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JustTools

Free Online Device Tests

Check your equipment before the meeting starts. The mic test shows a live sound level and lets you record and hear yourself; the webcam test shows your picture with its real resolution, frame rate and lighting. Both run in your browser — sound and video never leave your device — and both tell you what to fix when something does not work.

2 tools · free · no sign-up

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Mic Tester

Test your microphone online: a live sound level, waveform and spectrum, record and play back a clip, and fix a mic that is muted, quiet or not found.

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Webcam Tester

Test your webcam online: see the live picture, resolution, megapixels and frame rate, take a photo or record a clip, and fix a camera that will not start.

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FAQ

Device Tests: common questions

Are my camera and microphone recorded?

No. The sound and picture are analysed inside your browser and are never uploaded or stored. A recording you choose to make stays in the tab until you close it or download it.

Why does the browser ask for permission?

Browsers never give a website access to a camera or microphone without asking. Choose Allow to run the test; you can take the permission away again at any time from the icon in the address bar.

Can I test my internet connection too?

Yes — the Internet Speed Test measures download, upload, ping and jitter, the other things a video call depends on.

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