The toolbox

Video Trimmer

Video Trimmer snips the good part out of a video, right in your browser. Drop in a video, mark where the good part starts and ends, and download the cut.

Open Video Trimmer

Last updated October 27, 2026

How to use it

  1. Open Video Trimmer and drop in your video.
  2. Play it and mark the start and end of the part you want to keep.
  3. Trim it, preview the cut, and download.

Good to know

  • One action per trim. Marking and previewing are free.
  • Common video formats work; if your browser can play it, the trimmer can usually cut it.
  • Rendering happens on your device, so very large files take a while and a strong sneeze of patience.

Your data

Your video never leaves your device. The trim happens in your browser and Bum Bum keeps no copy.

Tips

  • Mark a little wide, then tighten. Cutting a second of dead air is easy; recovering a clipped first word is not.
  • For a clip headed to social, trim to the moment itself. Context is what the caption is for.

Questions

Does my video upload anywhere? +

No. Everything happens in your browser.

What video formats work? +

The common ones your browser can play, like MP4 and WebM.