About this site

Last updated 2026-08-09

The problem it solves

Almost every free online converter works the same way. You upload your file, it sits in a queue on a server you know nothing about, and some minutes later you download a result. Your footage has been copied onto someone else's disk, and you have no way to know for how long it stays there.

For a holiday clip that hardly matters. For a recorded client call, an unreleased edit or anything filmed in a private setting, it matters a great deal.

Browsers became capable of running a real media encoder some years ago. That makes the upload step unnecessary, so this site does without it.

How it works

Each tool loads a WebAssembly build of FFmpeg, the same engine behind most professional video software, and runs it directly in your browser tab. Your processor does the encoding.

The trade-off is honest: browser encoding runs perhaps two to four times slower than an installed program, and a browser tab has a memory ceiling that very large files will hit. For clips of a few minutes, neither is noticeable.

There are no accounts, no watermarks, no size gates and no paid tier, because there is no server cost to recover.

Who runs it

clipstool builds and maintains this site. It is a small independent project rather than a company with a support desk, and the fastest way to reach a person is the contact page.