Trim MKV files

Upload an MKV file, select the part you want to keep, and trim it. Trimming only the end is lossless; cutting from the start re-encodes the video so the cut lands exactly where you set it.

Matroska trimming without desktop tools

Long OBS recordings and archived MKVs cut down to size right in the browser. End-only trims ride the lossless copy path; start cuts re-encode at high quality for exact placement.

Frequently asked questions

Can I cut a 3-hour recording session down?

Yes, and if the keeper section runs from the start, the trim is a fast lossless copy no matter the total length.

Do all the MKV’s tracks survive?

The primary video and audio carry through. For multi-track selection, run the select audio track tool first.

Uploaded anywhere?

No, processing stays on your machine.