ShrinkCast
100% on-device
We collect nothing. Your videos never leave this device.

Video tools that never upload your files

Compress a video under 10 MB, convert it, trim it, turn it into a GIF, mute it, change its speed, pull frames out of it or add subtitles. All of it runs locally, so nothing is ever stored or seen by us.

No uploads, ever

Your video is processed directly in this browser tab. It is never sent to a server.

Nothing is stored

We keep no files, no accounts, and no logs. Close the tab and every trace is gone.

Runs on your device

A WebAssembly build of FFmpeg does all the work using your own CPU.

How it works

Three simple steps. The heavy lifting runs entirely inside your browser, so your footage never touches the internet.

  1. 01

    Drop a video

    Select or drag in any common video file. It stays on your machine.

  2. 02

    Set it up

    Pick a target size, a format, a trim range — whatever the tool needs.

  3. 03

    Download the result

    A full build of FFmpeg runs on your own CPU, then you save the file.