What is an audio trimmer?
An audio trimmer lets you cut a section out of an audio file by setting a start point and an end point. Everything outside the selection is discarded, and the trimmed clip is saved as a new file. This tool does all of that directly in your browser; no upload to a server is involved.
How do I trim audio online?
Upload your audio file using the dropbox above, then drag the green handle to set where your clip starts and the red handle to set where it ends. You can also type precise timestamps into the Start and End fields. Click Play selection to preview the trim, then click Download trimmed file to save the result.
What audio formats does this tool support?
This tool accepts MP3, WAV, FLAC, M4A, AAC, OGG, AIFF, and other formats supported by your browser's Web Audio API. The trimmed file downloads as a 16-bit PCM WAV regardless of the input format.
Does trimming audio reduce quality?
If your source file is MP3 or another lossy format, the audio was already compressed when it was encoded. This tool decodes it, trims it, and re-encodes it as lossless WAV, so the output is as close to the original decoded quality as possible. No additional lossy encoding is applied. If your source is already WAV or FLAC, there is no quality loss at all.
What format does the download come in?
The download is a 16-bit PCM WAV file. WAV is lossless and works in every DAW, audio editor, sample player, and streaming platform. If you need to convert the trimmed file to MP3, see
WAV vs MP3 for when each format makes sense. Once you have an MP3, our
MP3 tag editor lets you update the title, artist, and cover art directly in your browser.
Can I trim MP3 files?
Yes. Upload your MP3, drag the handles to select the section you want, and download it as WAV. The tool decodes the MP3 in your browser and exports a clean WAV of the selected range. No MP3 compression artefacts are added beyond what was already in the source.
How do I set a precise start or end time?
Click into the Start or End field below the waveform and type a time directly. The format is M:SS.mmm, for example, 1:23.500 means 1 minute, 23 seconds, and 500 milliseconds. Press Enter or click away to apply. The waveform handles will update to match.
Does my audio file get uploaded to a server?
No. This tool runs entirely in your browser using the Web Audio API. Your file is processed locally on your device and never sent to any server. Nothing is stored or logged.