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🔄 Audio Reverser
Upload Audio
🔄
Drop an audio file here
or tap / click to browse — MP3, WAV, OGG, FLAC, AAC, M4A supported
Preview Original
Reverse Audio
Click the button below to reverse the audio. The entire file will be flipped so the end plays first.
Upload an audio file to get started.
About This Tool
This tool uses FFmpeg.wasm and the areverse filter to play your audio backwards in the browser. Useful for creating reversed sound effects, checking for hidden messages, or creative audio production. All processing is done locally — your file is never uploaded.
🎵 MP3 · WAV · OGG · FLAC · AAC · M4A
🔄 Full audio reversal
✓ Zero server transmission
Frequently Asked Questions
Are my audio files uploaded to a server?
No. All audio reversal is done using FFmpeg.wasm which runs entirely in your browser. Your files never leave your device and are never transmitted to any server.
What formats are supported?
The audio reverser supports MP3, WAV, OGG, FLAC, AAC, M4A, and other common audio formats. FFmpeg.wasm handles a wide range of audio codecs and containers.
Can I reverse an MP3 online without uploading it?
Yes. Select an MP3 file, reverse it in your browser, and download the backwards audio result. The file is processed locally with FFmpeg.wasm and is not uploaded to CryptoWave or any server.
How long does reversing take?
Processing time depends on the size of your audio file. All processing is done locally in your browser, so longer or higher-quality files will take more time. No internet connection is needed after the page loads.