Combine videos online, merge clips, no upload

Stitch intros, B-roll, and outros without a desktop NLE. Supercut concatenates clips locally so your raw files never leave your machine.

Open the editor, freeNo upload · No sign-up to start · 100% private

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Combine these clips into one video

Works with

MP4MOVWebM

How it works

  1. 1

    Add your clips

    Load multiple videos into the editor media panel, all local, no upload.

  2. 2

    Ask to merge

    Reference clips by name: “stitch @clip-2 onto the end.” Supercut joins them on-device.

  3. 3

    Export the merged file

    Preview the combined timeline and download. Merging ran in your browser.

Tips

  • Clips at different sizes are scaled to match before joining.
  • Order matters, arrange intro, body, then outro.
  • Trim each clip before combining for a tighter cut.

Why it stays private

Supercut decodes, edits and exports your video entirely in your browser with WebAssembly. Your footage is never uploaded, the only thing that leaves your device is the text of your prompt, so the AI knows what edit to plan. Read more in our Privacy Policy.

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Who uses this

Frequently asked questions

Can clips have different resolutions?

Yes. Supercut scales and pads clips to a consistent frame before joining.

Do merged videos upload?

No. Concatenation runs locally with WebAssembly, files stay on your device.

How many clips can I combine?

Add as many as your browser memory allows. Most workflows combine 2-5 clips at a time.

Ready to try it?

Drop a clip and describe the edit, it runs right here in your browser.

Open the editor