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Libre Reverse Audio

Play an audio file backwards. Useful for music production and checking for hidden reversed messages. Runs entirely in your browser, no upload.

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MP3, WAV, FLAC, OGG, AAC, M4A, Audio sen límite de tamaño de ficheiro

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Reverse an audio file so it plays backwards. Great for music production and checking for "backmasking". Runs entirely in your browser.

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Reverse Audio for Music Production Check Audio for Backmasking Reverse Sound Effects Decode a Reversed Audio Clip Reverse a Voice Recording for Fun

Como funciona

Reversing audio plays it back to front, sample by sample. This does it with FFmpeg in your browser — useful for production effects and for checking "backmasking" (hidden reversed messages).

1
FFmpeg.wasm loads once
The WebAssembly build downloads on first use and is cached afterwards.
2
You drop in audio
Your file is read into the browser's memory — never uploaded.
3
FFmpeg reverses it
The areverse filter flips the audio sample order; the result is re-encoded to MP3, all on your CPU.
4
You download the reversed track
Preview it in-page and download the MP3.