Trim MP4 Video lets you cut a short clip from a longer MP4 file directly in your browser. Choose the start and end time, trim the file, and download the selected fragment as MP4.
The tool uses FFmpeg WebAssembly with stream copy mode, so compatible MP4 videos are saved without re-encoding. That keeps the original video and audio quality while avoiding uploads to a server.
Best for
- Saving a short moment from a longer recording
- Preparing clips for sharing while keeping MP4 compatibility
- Private browser-only video trimming with no server upload
Technical notes
Original-quality trimming copies existing video and audio streams. For some MP4 files, the cut point may align to the nearest keyframe, which is the tradeoff that preserves quality without re-encoding.
Why use Client Tools?
- Privacy-First & Secure: All processing happens directly in your browser. We never upload your files to any server.
- Corporate Grade Security: Ideal for handling sensitive documents, contracts, and NDA-protected images. Since data never leaves your device, it is impossible for third parties to intercept it.
- No Limits: Convert as many files as you want, of any size (limited only by your device's RAM).
- Fast & Offline Capable: Works instantly without waiting for network uploads.
How it works
Unlike other converters that require you to upload your files to a cloud server (which creates a privacy risk), Client Tools uses advanced WebAssembly technology to run professional image processing software directly inside your web browser.