Merge / Join Videos
Concatenate 2–5 video files into one — free, in your browser, no upload.
100% in your browser
No watermark
No sign-up
How it works
- Drop 2 to 5 video files into the zone — or click to browse.
- Drag the ↑ ↓ buttons to set the playback order.
- Click "Merge videos" and the files are concatenated in your browser using stream copy — no re-encoding, no quality loss.
- The merged MP4 downloads automatically. Nothing is ever uploaded.
Frequently asked questions
- Is merging videos free?
- Yes — completely free, no account required, no watermarks.
- Are my videos uploaded to a server?
- No. All processing happens locally in your browser using WebAssembly. Your files never leave your device.
- What video formats are supported?
- The tool accepts any format your browser can read (MP4, WebM, MOV, MKV, AVI, M4V). For the cleanest join, use the same format and codec for all files.
- Why is the output always MP4?
- The concat demuxer uses stream copy so there is no re-encoding. MP4 is the universal output container; if you need a different format, use the Video Converter tool after merging.
- How many files can I merge at once?
- Up to 5 files per merge. Run the tool again to merge additional batches.