Audio Reverser
Load an audio file and play it backwards — reverse the whole thing or just a selected section — preview it, then export a lossless WAV, all in your browser.
ℹ Reversing simply plays the samples in reverse order, so it’s sample-exact with no quality loss. Great for backmasking, reverse-reverb and reverse-cymbal effects, and sound design. Output is WAV (browsers can’t write MP3/AAC). Everything runs locally — your file is never uploaded.
How It Works
Your file is decoded to raw audio samples in the browser. Reversing writes those samples back out last-to-first — for each channel, the new sample out[i] is the original in[length−1−i]. Because it just reorders existing samples, the result is sample-exact and lossless at the original sample rate and channel count. In Selected region mode, only the samples between your start and end are flipped; everything before and after stays forward, so you can reverse a single word, drum hit, or phrase in place. Nothing is uploaded; it all runs on your device.
Reversed audio is a staple of creative production: backmasking (hidden-message effect), reverse reverb swells before a hit, reversed cymbals and risers, and general sound design. The output is lossless WAV; re-encode it to MP3 in a desktop app if you need it.