Compress a video online, smaller file, no upload

Make a video small enough to send or post without handing it to a server. Supercut compresses your clip locally in the browser, so you get a lighter file while your footage stays entirely on your device.

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Compress this video to a smaller size

Works with

MP4MOVWebMMKV

How it works

  1. 1

    Drop your clip

    Load the video you want to shrink. It opens in your browser, nothing is uploaded.

  2. 2

    Ask to compress

    Say “compress this video” and Supercut re-encodes it to a smaller size while keeping it watchable.

  3. 3

    Download the smaller file

    Preview the result and export the compressed clip, ready to share over email, chat or social.

Tips

  • Compress last, after all edits, to avoid stacking quality loss.
  • Aim under the platform limit (for example Discord) in one pass.
  • Downscale resolution first if the file is still too big.

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

Is my video uploaded to compress it?

No. Compression runs in your browser with WebAssembly. The file never leaves your device.

How small can the file get?

It depends on your clip and the quality you want to keep. Supercut re-encodes to reduce size while staying watchable.

Which formats can I compress?

Common formats like MP4, MOV and WebM. You can also export to a different format if that helps shrink the file.

Ready to try it?

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

Open the editor