Just Converter
Convert supported media and documents with reusable batch settings
...Just Converter is a free, closed-source Windows app for supported images, audio, video, documents and PDF workflows. Check compatibility before processing, inspect a sample and reuse profiles for batch jobs. Explorer commands, watch folders and a JSON command line support repeatable work. Conversion runs locally, but linked document resources can trigger network requests. Legacy Office input requires LibreOffice; XLSX formulas are not recalculated. Current Osenpa releases are closed-source; the historical MIT category here does not describe their license.
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