Trim Audio Online
Cut a clip down to just the part you need — drag, preview, and export. Free and private.
Optimize for — sets bitrate & channels
Output settings
Selection
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Original
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Estimated output
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Saved
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Recommendation
Load an audio file to see a tailored suggestion.
Encoding…
100% private — your audio is processed locally and never uploaded to any server.
Cut audio without installing anything
Whether you are making a ringtone, grabbing a sample, removing dead air from a recording or cutting an intro, trimming is the most common audio edit there is. This Audio Optimizer lets you do it visually in the browser — drag two handles across the waveform to set the start and end, press play to check, and export only the selected region.
Because everything runs locally, your file is never uploaded. It works offline once the page loads and is safe for private recordings. You can export the trimmed clip as a small MP3 or a lossless WAV.
Trimming is also the simplest way to make a file smaller: less audio means fewer kilobytes, with no quality trade-off on the part you keep.
Step by step
- Drop your audio onto the upload area or click to browse.
- Drag the left handle to the start and the right handle to the end of the part you want.
- Press play to preview just your selection — it loops within the handles.
- Choose an output format: MP3 for a small file or WAV for lossless.
- Click Optimize & download to save the trimmed clip.
Tips
- Removing silence at the start and end is a free way to shrink a file with zero quality loss.
- Click anywhere on the waveform to move the playhead and find the exact cut point.
- Export as MP3 if you also want to compress; choose WAV to keep the trimmed audio lossless.
- For ringtones, keep the clip short (under ~30 seconds) and export as MP3.
- Need to keep two separate parts? Trim and export once, then reload and trim the second part.