Reverse Audio

Flip a recording end to end. Handy for reverse effects, for boomerangs, and for hearing what a backwards message actually says.

100% local — your audio never leaves this device.Your file is decoded and processed by your own browser using the Web Audio engine built into it. Nothing is uploaded to a server, so even long recordings and unreleased tracks stay entirely private.
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About this audio reverser

Reverse Audio plays a file back to front. It is the oldest trick in recorded sound and still one of the most useful — reversed cymbals, swelling risers, and the classic backwards-message curiosity.

The Backwards mode simply reads the recording from the last sample to the first. Nothing is re-encoded beyond the final save, so the quality is exactly what went in. The Forwards then back mode plays the original and then its mirror image, joined with a short blend, which gives you a seamless loop that always returns to where it started.

A short fade on the outer edges is switched on by default. Reversed audio often ends on what used to be an abrupt beginning, and without a fade that lands as a click.

How to use
  1. Upload an audio file.
  2. Choose Backwards or Forwards then back.
  3. Leave the fade on unless you specifically want the raw edge.
  4. Pick WAV or MP3 and press Reverse.
  5. Play it back, then download.
FAQ

No. The samples are read in the opposite order and nothing else is touched. Any quality change comes only from the format you choose when saving — WAV loses nothing at all.

It plays the file and then its reverse, so the sound ends exactly where it began. That makes a clip that can be looped forever with no audible seam, which is what the boomerang effect on social apps does with video.

Not in this tool directly — trim the section you want with the Audio Trimmer first, then reverse that.

Because what is now the beginning used to be a natural ending, which often stops dead. The 30 millisecond fade option smooths it; leave it ticked unless you need the hard edge.

No — reversing is one of the fastest things you can do to audio. The only real wait on a long file is decoding it at the start and encoding MP3 at the end.