Open anything
.md .mdx .markdown .mkd .mkdn .mdown .mdtxt .mdtext
A lightweight Markdown and MDX viewer for Windows
Markdeck opens Markdown files instantly. Browse folders, switch themes, search inside files, and export to PDF, all in a native WinUI 3 app that stays out of your way.
Open anything
.md .mdx .markdown .mkd .mkdn .mdown .mdtxt .mdtext
Drag & drop
Drop files or folders directly into the viewer. No file picker needed.
File tree sidebar
Browse folders with a collapsible tree. Click any file to preview it instantly.
Dark & light themes
System, Light, Dark, and High Contrast themes. Matches your Windows preference.
Find in page
Search within any file with highlighted matches and navigation (Ctrl+F).
Print & Export PDF
Print any document or export it as a PDF directly from the viewer (Ctrl+P).
Configurable file types
Choose which file extensions to associate with Markdeck.
Auto-reload & recent files
Files reload when changed on disk. Recent files list keeps your work one click away.
Built for Windows
Native WinUI 3 app. Fast, small, no runtime dependencies.