MDReader - Interactive Markdown & Mermaid Viewer

View and edit Markdown files with beautiful Mermaid diagrams directly in Chrome.

MDReader is a fast, highly secure, and beautifully designed local Markdown editor and viewer built to enhance your reading and writing experience. It automatically intercepts and renders any local `.md`, `.markdown`, and `.mdx` files directly in your browser, turning plain text into interactive documents with stunning real-time Mermaid diagrams. 🌟 KEY FEATURES: - **Interactive Split View**: Edit your Markdown on the left pane and see the rendered results instantly on the right with a perfectly synchronized Scroll Sync feature. - **Rich Mermaid Diagram Rendering**: Write or view complex flowcharts, sequence diagrams, Gantt charts, class diagrams, and mindmaps directly within code blocks. - **Advanced Diagram Zoom & Pan**: Click any Mermaid diagram to expand it to full-screen inside a gorgeous glassmorphic modal overlay. Zoom smoothly from 15% to 1000% using your mouse wheel and drag (pan) around effortlessly. - **Smart Local Library Dashboard**: MDReader's home dashboard safely remembers your recent and pinned local documents, storing everything locally and updating relative open times live every minute. - **One-Click Export**: Save your changes directly back to your local drive or export your document as a beautifully formatted standalone HTML file containing built-in dynamic loaders so others can view your diagrams without installing extensions. - **Premium Dark & Light Themes**: Enjoy seamless visual transition with persisted light and dark modes that match your browser preference. 🔒 100% SECURE & PRIVATE: MDReader operates entirely locally within your browser context. It does NOT request internet access, nor does it collect, store, or transmit any of your personal information, files, or document history to external servers. Your data belongs to you, always.