Free online audio cutter & MP3 trimmer
Trim, cut, and edit MP3, WAV, AAC, M4A, OGG, and WebM audio files directly in your web browser. Preview your track with an interactive visual audio waveform, set precise start and end times down to milliseconds, apply fade in/out transitions, and export high-quality audio with zero server uploads.
How to trim and cut audio online
- Drop your audio file into the workspace or click Upload to select a track.
- Drag the start and end time sliders or scrub the visual waveform to isolate your desired segment.
- Click Play Cut to preview your selection with real-time playhead tracking.
- Optionally enable Fade In, Fade Out, or Volume Boost effects.
- Click Download Cut Audio to save your trimmed track as a lossless WAV file instantly.
Why use in-browser audio cutting
Traditional online audio editing sites upload your personal recordings and large music files to third-party servers, forcing you to wait in processing queues and exposing private voice memos. ToolCrix leverages the Web Audio API to decode and splice audio in your computer's local memory with zero server latency and 100% privacy.
Key features & benefits
- Interactive visual waveform: inspect audio peaks and scrub through tracks with millisecond precision.
- Zero server uploads: your music, voice notes, and audio clips never leave your device.
- Fade & volume controls: apply smooth fade-in and fade-out curves plus up to 200% volume boost.
- Lossless client export: generates clean PCM WAV audio files playable on any device.