Greenlight
Test your mic, webcam & speakers — nothing uploaded
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Greenlight - Test your mic, webcam & speakers — nothing uploaded

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Free browser test for your microphone, webcam, and speakers. Live mic meter, camera preview, left/right speaker test, and 10-second record & playback. No signup, no download, and nothing leaves your device. Plus 21 fix guides for Zoom, Teams, Meet & more.

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Hey Product Hunt! 👋 I built Greenlight because every "mic test" site I tried either wanted me to sign up, install something, or was vague about what happened to my audio. Before a call, I just want to know: can people hear and see me? Greenlight runs entirely in your browser using built-in audio and camera features. There's no backend that receives your audio or video, so there's nothing to upload to. What it does: • Live mic level meter and waveform • Webcam preview with camera switching • Left/right speaker test • 10-second record & playback to hear how you actually sound • 21 step-by-step guides for when it works here but not in Zoom, Teams, Meet, Discord, and more It's free and ad-supported. I'd love to hear what's missing, and which apps or devices you'd like guides for next.