Free Audio Cutter
Visually cut, trim, and extract sections from your audio files. Processed entirely inside your browser for ultimate speed and privacy.
Choose an Audio file
Or drag and drop your file here
Processed securely on your device. No files are uploaded to our servers.
audio.mp3
Size: 0 MB
Duration: 00:00
Drag the blue edges on the wave to select the exact part you want to keep.
You can manually fine-tune the cut times below (Format: HH:MM:SS.ms)
If the engine fails to load, verify your site has an SSL certificate (HTTPS) and Cross-Origin headers are enabled in your .htaccess file.
Loading Audio Engine
Fetching local processing core...Cutting Audio...
Processing locally...How to Cut Audio Files Online Securely
Extract your favorite parts of a song, trim unwanted silences from podcasts, or snip a ringtone. Follow these three steps to cut audio visually in your browser.
Select Your Audio
Choose an MP3, WAV, M4A, or OGG file from your device. Because processing happens locally, there are no upload wait times.
Drag to Trim
Use the visual audio waveform to highlight the exact section you want to keep. Drag the blue handles to adjust the timing perfectly.
Cut and Save
Hit the cut button. Our WebAssembly engine trims the file without altering the audio encoding, ensuring a flawless, lossless download.
Why Use Our Local Audio Cutter?
Visual Waveform Editor
Stop guessing timestamps. Our professional wave visualizer allows you to see the beats, pauses, and drops in your music, making it incredibly easy to slice audio perfectly.
100% Private (No Uploads)
Traditional tools force you to upload personal recordings to their servers. We use WebAssembly to cut your file directly inside your browser. Your data never leaves your device.
Lossless Quality
Our engine uses an advanced audio stream-copy mechanism. This means your file is sliced directly without being re-encoded, preserving the original studio quality flawlessly.
Lightning Fast Execution
Since you aren't waiting to upload a large audio file and then waiting again to download the result, the entire cutting process happens almost instantaneously on your machine.
Frequently Asked Questions
Yes, it is entirely private. Toolszu uses modern WebAssembly technology to process your audio file entirely within your browser's memory. The file is never uploaded to our servers, making it 100% safe for personal voice notes, private podcasts, and unreleased music tracks.
No. Our backend utilizes "stream copying." This bypasses the re-encoding step entirely. It simply slices the data at the exact timestamps you select on the waveform, meaning the final downloaded file retains the exact same bitrate and quality as your original upload.
Yes! As long as you are using a modern browser (like Safari on iOS or Chrome on Android), the WebAssembly engine and visual waveform will run flawlessly. You can choose files straight from your mobile files folder and trim them on the go.
The FFmpeg engine requires a Secure Context to run in your browser. Ensure the URL starts with `https://`. If you are the website owner, ensure you have enabled Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy headers in your server's configuration.
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