Audio Trimmer
Cut a selected time range from a local audio file and export the trimmed result.
Free browser tool
No Matrix computer needed
✓ No account or card
✓ Use the result right away
✓ Task-specific limits below
Workspace
Use audio trimmer
Runs in this browser tab
Mono or stereo, up to 80 MB and 3 minutes. Input formats depend on your browser's decoder. Files stay on this device.
Result
How to use it
Choose audio, set start and end times within the clip, then preview and download the cut.
What to check
The clip is decoded in your browser; a file over three minutes is not accepted.
Review the result before using it in a published page, application, or agent configuration.
Quick answers
Frequently asked questions
How do I choose the part of an audio clip to keep?
Set start and end times within the loaded clip, process it, then preview and export the cut as a new file.
Does trimming change the original recording?
No. Matrix processes a local copy and downloads a new result. Keep the original if you may need the removed section later.
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Need this work to keep going?
Matrix gives agents a private cloud computer for files, connected tools, and work that continues after you close your laptop. The browser tool above is free; a Matrix computer requires a paid plan.