Check Audio for Backmasking

Reverse a track to listen for hidden backwards messages.

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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.

backmasking tips

🕵️

Reverse a song to check the old "hidden message when played backwards" claims for yourself.

🎧

Reverse it again and you get the original back — it's a lossless operation in principle.

🔁

A fun way to explore audio you already have.

🔒

Runs locally in your browser.

Escolla Ficheiro

Drop your file into the tool above. It stays entirely on your device — nothing is sent to any server.

Proceso

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Descargar

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

✓Completamente gratuíto, sen custos ocultos, nunca

✓Non se precisa ningunha conta, correo electrónico ou inicio de sesión

✓Os ficheiros nunca saen do teu dispositivo

✓Non hai límites de tamaño de ficheiro

✓Non hai marcas de auga en ningunha saída

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