This tool takes an MP3 and makes it play on repeat without the click or silent gap you usually get when a track restarts. It scans the audio, finds the spots where the end and the start line up, and exports a version built to loop on those points so the seam is hard to hear.
Load your MP3, let it analyze the track, then choose how the loop runs. Keep the whole song looping or trim to a shorter section. Preview it, drag the in and out points if you want a tighter cut, and export.
Use it for MP3 background music that runs as long as you need, a study or focus track that doesn't restart with a jolt, or a short loop or sample to pull out of a song and drop under a video, game scene, or stream.
Where you place the loop points matters more than the file itself. Cutting on a beat or at the end of a musical phrase gives the cleanest repeat, so if a loop still sounds slightly off, nudge a point onto a downbeat.
Does it just trim the file, or actually loop it? Both. It finds matching points and exports an audio file made to repeat, so you're not stuck flipping "repeat" in a player and hoping the join doesn't jump.
It runs in your browser, free, with no signup or install, and handles common formats like MP3 and WAV.