Drop videos here or click to upload
Select multiple videos | Drag to reorder
Videos are processed entirely in your browser. Nothing is uploaded to any server.
Easily arrange video order by dragging. Change sequence anytime.
See thumbnails and duration for each video at a glance.
Merge as many videos as you want. No watermarks added.
Merge videos online free with FreeToolBox — combine multiple video clips into a single continuous video file in your browser without any software installation. Whether you're joining travel clips into a highlight reel, combining interview segments, or assembling multiple short videos for YouTube, our Video Merger handles it with FFmpeg.wasm. Add video files, arrange them in order, and download the merged output.
All processing happens locally using WebAssembly — your video files are never uploaded to any server. The output video has no watermarks. Completely free, no account required.
For best results, clips should have the same resolution, frame rate, and codec. Merging clips with different properties will work but may require re-encoding, which takes longer.
MP4, MOV, WebM, and other common formats are supported as input. The output is typically MP4 for maximum compatibility.
There's no hard limit set by the tool. The practical limit depends on your device's available memory. Very long or high-resolution clips may require more time.
No. FFmpeg.wasm processes all video merging locally in your browser. Your files never leave your device.