Is my video uploaded?

No. The video is processed on your device, inside your browser. Nothing is sent to a server.

Which browsers does it work in?

Current Chrome, Edge and Firefox, and Safari 16.4 or later. Video is decoded and encoded with the codecs built into your browser. MP4 and MOV (H.264) need a browser with an H.264 encoder, which Chrome, Edge, Safari and most versions of Firefox have; WebM works in all of them.

Why does my clip start a moment early?

A lossless cut can only begin on a keyframe, which may be a second or two before the time you chose. Turn on "Frame-accurate cut" for an exact start, at the cost of re-encoding.

Trim Video - Free Online Tool

JavaScript is turned off. InspireTools processes files in your browser, so the tools need JavaScript to run.

Cut a video down to the part you want.