Flutter Markdown Editor is an open-source application for creating, editing, and previewing Markdown documents on mobile and desktop devices. It opens existing .md files directly from the file explorer and supports creating new documents. Users can insert headings, bold text, italics, links, and tables through convenient editing controls. Its preview displays Markdown formatting, mathematical expressions, images, and interactive checkboxes. Dual View mode shows the editor and rendered preview simultaneously, while Single View mode supports swipe navigation. The interface offers light and dark themes, dynamic colors, and multiple languages. Documents can be saved, printed, or shared as Markdown, plain text, and PDF files.