Free online tool
Trim Audio & Video Online
Cut MP3, WAV, FLAC, MP4, MOV and more to the exact length you need - instantly, in your browser.
Drag & drop an audio or video file here
MP3 · WAV · FLAC · AAC · OGG · MP4 · MOV · MKV · and more
Why use this tool?
Visual waveform
See the audio waveform and watch the selected region highlight as you adjust start and end points.
Precise controls
Slider controls let you set start and end to the nearest 0.1 second. Preview before you cut.
No quality loss
Uses stream copy mode when possible - audio and video are cut without re-encoding to preserve quality.
100% private
Your file never leaves your device. All processing happens locally via WebAssembly.
Works on any device
Mobile-friendly sliders work on touch screens. No app to install, no account to create.
Completely free
No account, no registration, no email. Open the page and start trimming.
How to trim audio or video online
- 1
Upload your audio or video file
Drag and drop or click to select an audio or video file. MP3, WAV, FLAC, MP4, MOV, MKV and more are supported. The file stays on your device.
- 2
Set start and end points
Use the Start and End sliders to define the clip. The waveform highlights the selected region. Hit Play to preview.
- 3
Click Trim
Click the Trim button. The file is cut without re-encoding when possible - fast, private, and quality-preserving.
- 4
Download
Download the trimmed file instantly. Same format as the original. No registration, no email, no waiting.
Professional audio restoration
Trimmed audio or video still sounds noisy?
Trimming removes the bad parts - but if the remaining sound has noise, hiss, hum, or muffled speech, WefixSound engineers can professionally restore it. Free sample before you pay.
Frequently asked questions
How do I trim audio or video online for free?
Upload your audio or video file, use the Start and End sliders to set the clip boundaries, preview it, then click Trim. Nothing is uploaded to any server.
What audio and video formats can I trim?
You can trim MP3, WAV, FLAC, AAC, OGG, M4A, AIFF, OPUS, MP4, MOV, MKV, WebM and most other common media formats.
Will trimming reduce quality?
No when stream copy is available. The tool cuts without re-encoding whenever possible, so quality is preserved.
Is my file uploaded to a server?
No. The trimmer runs entirely in your browser using WebAssembly. Your audio or video file never leaves your device.
Is there a file size limit?
There is no server-side limit. Practical limits depend on your device memory.