This tool changes the volume of an audio file in your browser. Make a whole track louder or quieter, or adjust the level on just one part of it, then export the result. It runs entirely on this page, costs nothing, and needs no signup or install. It works with common formats like MP3 and WAV. Load your file by uploading it. The track shows up as a waveform, so you can see its loud and quiet parts. Change the level for the full track, or select a section of the waveform first to change only that stretch. Play it back to check, then download the new file. A common case: a recording where the music sits fine but one verse or the vocals come in too soft. Select that section and bring it up to match the rest. Another: a clip that's too quiet for a video or post, where you just want the whole thing louder before exporting. Worth knowing: if a track was recorded very quietly, turning it up also raises any background hiss, since boosting the level amplifies everything. Bring it up enough to be comfortable rather than pushing it to the maximum, and listen for distortion at the loudest peaks. People searching for this usually want to know if they can do it without software. You can. Your original stays untouched until you export the adjusted version.
