A local video editor that needs no install
Local used to mean installed. CutNoodle is local in the sense that matters, which is that your video never travels: the analysis and the encoding both happen inside your own browser, on your own machine.
Three ways to build a video tool
Installed desktop application. Fast, powerful, and yours. It also has to be downloaded, kept up to date, and reinstalled on every machine you work from, and on a managed laptop you may simply not be allowed to.
Cloud service. Nothing to install, and the heavy encoding runs on hardware you do not have to buy. In exchange your footage is uploaded to a server, which means an upload wait proportional to file size, a storage policy you have to trust, and usually a plan with limits.
In the browser, locally. The application is a web page, so there is nothing to install, but the processing still happens on your machine, so nothing is uploaded. This is what CutNoodle does, and until recently it was not really possible for video.
What makes it possible
The engine is ffmpeg, the same open-source project that sits under most desktop editors, compiled to WebAssembly so it can execute inside a browser tab at close to native speed. Alongside it, the Web Audio API decodes and measures the audio track for silence detection, and IndexedDB keeps your edit state so a reload does not cost you your work.
When you pick a file, the browser hands the page a reference to it on disk. The page reads it, works on it, and writes the export locally. There is no request carrying your media anywhere, which is not a policy promise but a property of where the code runs. You can watch the network panel while you edit and see it stay quiet.
What that buys you
- No upload wait. A two gigabyte recording is ready to edit the moment you select it. With an upload-first service, that same file is a coffee break before anything starts.
- No size or minutes quota. There is no server paying for your processing, so there is nothing to meter. The practical ceiling is your own memory, not a plan tier.
- Confidential footage stays confidential. Client interviews, unreleased course material, anything under NDA or under embargo: none of it is copied to a third party, because there is no third party in the loop.
- No account. Nothing to register, no email to hand over, no password to lose.
- It works on a locked-down machine. If you cannot install software on your work laptop, a web page is still a web page.
What it costs you
This is a real trade, and pretending otherwise would be dishonest. Encoding in a browser is slower than encoding in a native application, because the code runs through WebAssembly and because the browser is more careful about memory. On a short clip you will not notice. On a long 4K file you will, and a desktop tool is genuinely the faster choice.
Memory is the other constraint. A cloud service can throw a large machine at a very large file; your laptop has what it has. CutNoodle is careful about this, but an enormous recording on a machine with modest RAM is a real limit rather than a message you can dismiss. Multi-threaded export also depends on the page being cross-origin isolated, and browsers that do not provide it fall back to single-threaded encoding, which is slower.
And the feature set is deliberately narrow. CutNoodle removes silence and lets you adjust the result. It does not transcribe, it does not do multi-track, colour, titles, or effects. It is a tool for one job, not a replacement for an editing suite.
When local is the right answer
If your footage is sensitive, if your files are large, if you work from more than one machine, or if you simply do not want another installer on your system, local-in-the-browser is the shape that fits. If you need speech-to-text, heavy compositing, or the fastest possible 4K encode, it is not, and the alternatives page points at tools that are better at those jobs.
CutNoodle is free and runs in your browser. Open the editor and drop a video in: nothing is installed and nothing is uploaded.