Drag and drop an audio file onto the upload zone, or click it to browse your files. Supported formats include MP3, WAV, AIFF, FLAC, OGG, M4A, and AAC.
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Play / Pause
Click the center transport button to start or stop playback. The VU meter and all readouts respond in real time while the file plays.
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Progress Bar
Click anywhere on the progress bar to jump to that position, or click and drag to scrub through the file.
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Volume Knob
Drag upward to raise the monitoring volume, downward to lower it. A click without dragging resets the level to 0 dB. This controls listening level only and does not affect the file.
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Analyze
Runs a full offline loudness analysis on the uploaded file, measuring Integrated LUFS, True Peak, LRA, and detecting any clipping events. Includes a streaming compliance check against the -14 LUFS standard.
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View (Spectrum Analyzer)
Opens a real-time frequency spectrum display while the file plays, alongside live RMS, True Peak, LUFS, and LRA readouts.
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Privacy
Your file is processed entirely in your browser. Nothing is uploaded, stored, or transmitted anywhere. All data is automatically cleared when you close or leave this page.