Filee

Filee is a free and open-source file conversion and media toolset developed for Windows, Linux, and macOS operating systems. It requires no installation, no account creation, and works entirely offline on your computer.
Key Features:

    Radial Menu Experience: When you select files and drag them while holding down a modifier key (such as Ctrl), a convenient ring of formats opens right next to your cursor, allowing you to convert files to different formats.

    Extensive Format Support (255+ Formats): Supports 255 different formats across 18 categories, including images, PDFs, Word, Excel, PowerPoint files, videos, audio files, ebooks, CAD drawings, archives, and Korean HWP/HWPX documents.

    No Office Software Required: Converting Word, Excel, PowerPoint, and HWP files doesn't require the installation of Microsoft Office, Hancom Office, or LibreOffice; it works with their built-in engines.

    Privacy-Focused and Offline: Because all operations take place directly on your own computer, your confidential documents and photos are never uploaded to a server.

    Command Line and Automation Support: With the `filee convert` and `filee watch` commands, you can execute operations directly from the terminal or automatically monitor and convert specific folders.