Precise in-browser cuts
Free Video Trimmer
Cut dead air from the start or end of a clip. Set precise start and end times, preview, and download the trimmed MP4. Everything runs locally.
Quick answer
Free Video Trimmer is a free browser tool on Knowlify. Use it below with no signup. Media files are processed on your device and are not uploaded to our servers. For narrated training videos from documents, use https://create.knowlify.com.
How it works
Three steps, no account
01
Load your video
Drop an MP4. The tool reads duration so you can set accurate timestamps.
02
Set start and end
Enter times in seconds (or mm:ss). Keep the range under your source duration.
03
Export the trim
Download the cut. Chain with the MP4 combiner if you need to stitch multiple cuts.
FAQ
Questions people ask about Free Video Trimmer
Is trimming frame-accurate?+
Cuts use FFmpeg in your browser. Accuracy depends on keyframes in the source; re-encoding improves precision but takes longer.
Can I trim multiple segments?+
This tool exports one range at a time. Trim each segment, then merge with the free MP4 combiner.
Is this video trimmer free?+
Yes. Trim MP4 clips in your browser with no signup, watermark, or cloud upload.
How do I cut a video without uploading it?+
Set start and end times on this page and export. Processing uses FFmpeg.wasm on your device.
Do I need an account?+
No. Open the tool, use it in your browser, and download or copy the result.
Does this work on Mac and Windows?+
Yes. It runs in modern desktop browsers (Chrome, Edge, Firefox, Safari). Very large media files need enough device memory.
Need a full video, not just a utility?
Trimming finished files is useful. Building the right video from a script or SOP the first time is faster with Knowlify.