Your files stay on your device
File processing runs in your browser. Documents are not uploaded to our servers. The site may download processing engines and send usage or feedback events without file contents.
How we handle your dataMicrophone, camera and sound
Voice Recorder
Record your voice in the browser, play it back and save the file. The recording stays on your device.
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Microphone TestCheck that your microphone works, see the input level and record a short sample that stays in your browser.Webcam TestCheck that your camera works and see its resolution and frame rate. The video stays in your browser.Speaker TestPlay test tones on the left and right channels and check your speakers or headphones.Headphone Test — left, right and stereoCheck left and right channels, stereo balance, phase and frequency range of your headphones.Tone GeneratorPlay a pure tone or sweep at any frequency, with sine, square, triangle and sawtooth waves.Decibel Meter — relative sound levelSee how loud your surroundings are through your microphone. Uncalibrated: levels are relative, not certified dB SPL.Online MirrorUse your camera as a mirror, with zoom, brightness and a full-screen view. The video stays on your device.