Upload an MKV file and convert it to MOV. When the codecs already fit the target container, the conversion is lossless and near-instant; otherwise the video is re-encoded.
Your file never leaves your device. All processing happens right in your browser, and nothing is uploaded to a server.
When your MKV carries codecs MOV understands (H.264, HEVC, AAC), the tool copies them straight across with no quality loss. Streams MOV cannot hold are re-encoded automatically at high quality.
Mac-centric editing setups sometimes balk at MKV while accepting MOV happily. Screen recordings and downloads in MKV become editable without an intermediate desktop tool.