Audio Trimmer — Cut Trim Audio Files Online
Upload an audio file, visualize the waveform, select start and end points, and trim your audio with precision — all in the browser. 100% client-side — nothing leaves your browser.
How to Use the Audio Trimmer
- Upload audio — click the upload area or drag an audio file onto it.
- Select range — click and drag on the waveform to set start and end points, or type exact times in the inputs.
- Preview — click Play Selection to hear only the selected portion.
- Trim — click Trim & Download to extract the selected range and save it to your device.
- Reset — click Reset to clear the selection and start over with the full file.
Why Use This Audio Trimmer
Trimming audio normally requires installing desktop software like Audacity. This tool uses the Web Audio API and OfflineAudioContext to process audio entirely in your browser. No uploads, no waiting, and your files never leave your device.
The waveform visualization makes it easy to identify silent sections, speech, or music segments. Precise time inputs with millisecond accuracy let you cut exactly where you need, whether you are editing a podcast intro, extracting a ringtone, or preparing a sample for a music project.
Frequently Asked Questions
Most formats supported by your browser are accepted, including MP3, WAV, OGG, M4A, AAC, and WebM audio. The trimmed output is always saved as WAV for maximum compatibility with audio editors and players.
No. The trim operation uses OfflineAudioContext to decode and re-encode the selected portion without re-encoding the original data. The output WAV is uncompressed PCM at the same sample rate and bit depth as the source.
The tool can handle files up to roughly 100 MB, though performance depends on your device's available memory. Very long files (hours) may take longer to decode and render the waveform. For best results, keep files under 50 MB.
Use Cases
Ringtone Creation
Extract your favorite part of a song to create a custom ringtone for your phone.
Podcast Editing
Remove intro/outro sections, long pauses, or mistakes from podcast recordings.
Music Sampling
Isolate specific sections of a track to use as samples in your music production workflow.
Voice Message Cleanup
Trim long voice recordings to keep only the important parts before sharing.