Video Trimmer Online — Cut & Trim MP4, WebM Free
Trim MP4, WebM videos — Multiple clips, timeline scrub, 100% browser-side
Free browser-based video trimmer. Upload any MP4 or WebM, drag the timeline handles to set your in/out points, preview your clip, and download — all 100% in your browser. No server upload, no registration, completely private.
Drop your video here or click to browse
MP4, WebM, MOV, AVI — Max 500MB
How to Use the Video Trimmer
1. Upload your video (MP4, WebM, MOV). 2. Drag the timeline handles or use I/O keyboard shortcuts to set your trim points. 3. Preview your trimmed region. 4. Click Trim Video to process — 100% in browser, no upload needed.
How Video Trimming Works
This tool uses the MediaRecorder API and Canvas API to capture only the frames between your in and out points. The video is processed entirely in your browser — your files never leave your device.
Frequently Asked Questions
Is my video uploaded to a server?
No. All trimming happens entirely in your browser using the Canvas API and MediaRecorder. Your video never leaves your device — it's 100% private.
What video formats can I trim?
You can upload MP4, WebM, MOV, and AVI videos. Output is available as MP4 (WebM codec), WebM, or MKV format.
Can I extract multiple clips from one video?
Yes! Enable multi-clip mode in the sidebar, set your in/out points, click "Add as Clip" for each segment, then click Trim to process all clips at once.
Why does processing take as long as the clip duration?
Browser-side video trimming uses real-time canvas capture — it processes at 1x speed. This is the only way to trim video without a server. Keep the tab open during processing.
How do I set precise trim points?
Use the timestamp input fields (HH:MM:SS.mmm format), or use keyboard shortcuts: press I to set the in point and O to set the out point at the current playhead position. Arrow keys step frame by frame.