Audio Trimmer & Cutter
Cut and trim MP3 and WAV audio files directly in your browser. 100% secure client-side processing with high-quality lossless WAV export.
Client-Side Audio Trimmer
Cut and extract sections from your MP3 or audio files seamlessly. Processing happens securely in your web browser—no uploads required. Exports directly to lossless WAV format.
Secure Client-Side Audio Editing
Our Audio Trimmer utilizes the native Web Audio API built into your modern web browser. When you "upload" a file to this tool, the file is never sent to a remote server. Instead, it is loaded directly into your device's memory.
This approach has two massive benefits: Privacy and Speed. You can comfortably edit sensitive recordings, proprietary podcasts, or copyrighted music loops without fear of data theft or DMCA scraping. Furthermore, because no data is transmitted over the network, processing and extraction happens almost instantaneously.
How to Trim an Audio File
- Load Audio: Click "Upload Audio File" and select an MP3, WAV, or AAC file from your computer.
- Preview: Use the green Play/Pause button to listen to your loaded track.
- Set Markers: Adjust the Start Time and End Time using the visual sliders, or type exact seconds into the input fields for precise micro-edits.
- Extract: Click the "Extract Audio Selection" button. The browser will instantly slice the buffer and render your new audio segment.
- Download: Click "Save .WAV File" to download your newly trimmed track.
Why Export to WAV?
When trimming highly compressed lossy formats like MP3, re-exporting them back into an MP3 format forces the audio to undergo a second pass of destructive compression (called "generation loss"), significantly degrading the audio quality.
To prevent this, our tool exports your trimmed selection as an uncompressed, lossless .WAV file. This ensures that your edited snippet retains the exact audio fidelity of the source file, making it perfect for use in video editing software like Premiere Pro, or music production tools like Ableton and Logic.
The tools and calculators provided on The Simple Toolbox are intended for educational and informational purposes only. They do not constitute financial, legal, tax, or professional advice. While we strive to keep calculations accurate, numbers are based on user inputs and standard assumptions that may not apply to your specific situation. Always consult with a certified professional (such as a CPA, financial advisor, or attorney) before making significant financial or business decisions.
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