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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Keep your tools and files together with Matrix
Utilities brings everyday text, file, and developer tools into Matrix. Some advanced browser tools remain on the website. The desktop client connects to your private Matrix cloud computer, which requires a paid plan.