Most "online" video editors quietly upload your footage to their servers to process it. If your video is sensitive, unreleased, or simply yours, that is a problem. Here is how to edit entirely in your browser, so the file never leaves your device.
Cloud editors do the heavy lifting on their servers, so the first thing they do is upload your file. That means your footage sits on someone else's machine, subject to their retention, access, and breach risk. For legal, medical, journalistic, or pre-launch content, that single step can be a dealbreaker.
Supercut runs the whole editing pipeline (decode, edit, export) in your browser using WebAssembly. Your footage stays on your machine the entire time. The only thing that goes over the network is the short text prompt you type, so the AI knows which edit to plan. There is no file upload.
You do not have to take our word for it. Load the page, then open your browser developer tools and switch the network to offline, or simply unplug. Run an edit and export it. It still works, because the processing is local. A cloud editor would stall the moment it lost the connection.
Go to the Supercut editor. There is nothing to install and no account needed to try your first export.
Add your video. It loads straight into the browser tab and stays on your device. Nothing uploads.
Type what you want, like trim to the first 30 seconds, blur the faces, or add captions. The AI plans it and a local engine runs it.
Check the result and download. Your footage never left your machine, only the text of your prompt was ever sent.
Trim and cut video in your browser. Drop a clip, say where to cut, and download it, your footage never leaves your device. No upload, no watermark to start.
Blur faces in a video to protect privacy, right in your browser. Face detection runs on your device, your footage is never uploaded.
Add auto-captions to any video in your browser. On-device transcription with viral caption styles, no upload, your footage and audio stay private.
Edit video without uploading to any server. Supercut runs FFmpeg in your browser, ideal for legal, medical, unreleased, or sensitive footage.
Blur faces to protect sources, clean audio, and trim, all in your browser. Sensitive footage never uploads, and Supercut keeps working offline.
Yes. Supercut processes video in your browser with WebAssembly, so the file stays on your device. Only your text prompt is sent so the AI knows what to do.
Because nothing is uploaded, there is no server copy of your footage to leak or subpoena. It is a strong fit for legal, medical, journalistic, and unreleased material.
Once the page has loaded, yes. You can switch to offline and still finish an edit, which is also the simplest way to prove nothing is being uploaded.
Processing uses your own device, so very large files depend on your machine's memory. For most clips this is a non-issue, and the privacy tradeoff is worth it.