Video Trimmer
Trim videos instantly in your browser. No server upload required.
Loading Video Engine (First time may take a few seconds)...
Why use UnitMaster Trimmer?
We use advanced WebAssembly technology to process video directly on your device. This means no uploads, no waiting, and 100% privacy.
100% Private & Secure
Your files never leave your device. Processing happens locally in your browser sandbox.
Instant Processing
No upload time. No server queues. Since we process files locally, even large 4K videos open instantly for editing.
Lossless Quality
Our "stream copy" mode trims your video without re-encoding it. This preserves the exact original quality, bitrate, and resolution.
Supported Formats
How to Trim a Video
1. Upload Video
Drag and drop your video file. We auto-detect the format and load it instantly.
2. Set Start & End
Use the timeline sliders to choose your clip. You can also type precise timestamps.
3. Download
Click "Trim Video". Your new clip is created instantly and ready to save.