Audio / Video
Audio Trimmer
Load an audio file, choose a start and end time, and download just that section — cut entirely in your browser.
Good to know
Frequently asked questions
Why is the result a WAV file?
Browsers can decode many audio formats but cannot re-encode MP3 or AAC without a large extra library. The trimmed audio is written as lossless WAV instead, which every player supports. WAV files are bigger than the original MP3.
Which input formats work?
Whatever your browser can decode — usually MP3, WAV, M4A/AAC, OGG and FLAC. If a file cannot be decoded you will see a clear message rather than a broken result.
Is the audio uploaded?
No. The file is decoded and cut with the Web Audio API on your device. Nothing is sent to a server.
Is there a size limit?
Decoding holds the whole file in memory, so very long recordings (roughly over an hour) may fail on low-memory devices. Trim in shorter passes if that happens.