Extract a JPG thumbnail from MKV
Save a frame from an MKV / Matroska video as a JPEG image.
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How it works
- Drop a
.mkvfile (or any video) onto the page. - The JPG output preset is already selected — hit Convert Now.
- Download the result. The whole conversion ran in your browser via WebCodecs or FFmpeg.wasm. No file left your device.
Why convert MKV to JPG?
Save a frame from an MKV / Matroska video as a JPEG image.
Is my file uploaded anywhere?
No. poqpoq is a static site — the page you're looking at is a bunch of JavaScript your browser downloaded once. It runs entirely on your device. There is no upload endpoint. When you open your browser's Network tab during a conversion, you'll see zero requests going out.