Trim MKV Video
Cut and trim MKV (Matroska) video files — no re-encoding, instant results. Free, private, no upload.
Trim any MKV video instantly without re-encoding. Drop your Matroska file, set start and end points with the visual timeline, and download. Everything runs in your browser — no server, no upload.
No data transfer — all data stays on your device!
About MKV Trimming
MKV (Matroska) is a flexible, open container format that can hold video, audio, and subtitles. This tool trims MKV files using FFmpeg WebAssembly with stream copy — preserving all streams and metadata while extracting exactly the portion you select.
Features
Near-Zero CO₂
Server-based converters upload your file, process it remotely, and send it back — consuming network and data-centre energy on every request. WebConverter runs entirely on your device, so the only energy used is your local CPU. No data transfer, no server electricity.
Install for Offline Use
WebConverter works offline as a Progressive Web App. Click "Add to Home Screen" on mobile or the install button in your browser's address bar. Once installed, you can convert files without any internet connection.
