What is Audio Trimmer?
Audio Trimmer is a free online tool that lets you precisely cut and trim any audio file — entirely in your web browser without any file uploads. Whether you're creating a ringtone, editing a podcast clip, removing silence from a recording, or extracting a specific musical phrase, our trimmer delivers studio-quality results in seconds.
Built on FFmpeg WebAssembly, our Audio Trimmer supports all major audio formats including MP3, WAV, OGG, AAC, FLAC, M4A, and AIFF. You can set precise start and end times to the millisecond, apply optional fade-in and fade-out effects, and download the trimmed result in the original audio format — no quality loss in stream copy mode.
The tool is ideal for podcast editors, musicians, content creators, and anyone who works with audio. After trimming, you may want to convert the audio format or trim the source video it was extracted from.
Key Features
Millisecond Precision
Set exact trim points to millisecond accuracy.
Waveform Visualization
See the audio waveform to identify exact trim points.
Fade In/Out Effects
Optional smooth fade effects at start and end of clips.
No Quality Loss
Stream copy mode preserves original audio quality.
All Audio Formats
Supports MP3, WAV, OGG, AAC, FLAC, M4A, and AIFF.
Browser-Based
No upload required — completely private local processing.
How It Works
- 1
Upload Audio File
Click the upload area or drag and drop your MP3, WAV, OGG, or other audio file.
- 2
Set Trim Points
Use the waveform timeline or input fields to set exact start and end times.
- 3
Apply Trim
Click "Trim". FFmpeg processes the audio entirely in your browser.
- 4
Download Result
Download the trimmed audio file in the original format.
Common Use Cases
- ▸Creating ringtones from songs or audio clips
- ▸Editing podcast episodes to remove silence or off-topic sections
- ▸Extracting specific musical phrases for samples or reference
- ▸Removing dead air from the beginning or end of recordings
- ▸Creating short audio previews or trailers
- ▸Trimming recorded lectures or interviews to specific topics
- ▸Preparing audio clips for use in video editing projects
Supported Formats
Privacy & Security
Audio trimming uses FFmpeg WebAssembly and runs entirely in your browser. Your audio files are never uploaded to or stored on our servers. All processing happens on your local device.
💡 Pro Tips
- ▸Use the waveform view to visually identify silence, applause, or specific audio events.
- ▸For ringtones, aim for 20-30 seconds and apply a 1-2 second fade-out for a professional finish.
- ▸Enter exact timestamps for precision cuts rather than dragging the handles.
- ▸For podcasts, consider removing the first/last few seconds of background noise or room tone.
Frequently Asked Questions
Frequently asked questions about Audio Trimmer.
Supported input formats include MP3, WAV, OGG, AAC, FLAC, M4A, and AIFF. Output format depends on the input, typically preserved in the same format.
When using stream copy mode, audio quality is completely preserved as no re-encoding occurs. If re-encoding is required, quality settings are optimized to minimize any loss.
Yes! Trim your favorite song or audio clip to 20-30 seconds and download it. On iPhone, you'll need to use iTunes/Finder to set it as a ringtone. On Android, it can be set directly.
No. All processing happens in your browser using FFmpeg WebAssembly. Your audio files never leave your device.
Currently, the tool processes one file at a time. Upload, trim, and download each file individually.
Audio trimming is precise to the millisecond. You can enter exact timestamps in the format hours:minutes:seconds.milliseconds for frame-perfect cuts.
Yes, our trimmer includes optional fade-in and fade-out effects that can be applied at the start and end of your trimmed clip.