Video Merger & Joiner is a free, browser-based tool that joins multiple video clips into one file, in the order you select them. Works best when all clips share the same format and resolution. It uses ffmpeg compiled to WebAssembly, so your videos never leave your device.
How to use the Video Merger & Joiner
- Select two or more video files, ideally the same format and resolution.
- Click Merge videos.
- Download the combined video once processing finishes.
Why use FreeToolsNets's Video Merger & Joiner?
- 100% free, with no usage limits and no account required.
- Everything runs locally in your browser — nothing you type is uploaded or stored on a server.
- Works on desktop, tablet and mobile in any modern browser.
- No installation, no plugins, and no ads blocking the tool itself.
Frequently asked questions
Can I merge videos with different resolutions or formats?
It works best with matching format/resolution/codec; mismatched clips may fail or merge incorrectly since this uses fast stream-copy merging rather than re-encoding.
Does merging re-encode the video?
No \u2014 this uses ffmpeg's fast concat mode (stream copy), which is quick but requires compatible clips.
Is this tool free to use?
Yes, completely free on FreeToolsNets, with no sign-up and no limits.
Is my data sent to a server?
No. Everything runs locally in your browser using JavaScript — nothing you enter is uploaded anywhere.
Does it work on mobile?
Yes, the widget is fully responsive and works on phones, tablets and desktops.