GitHub Markdown Reader

GitHub Markdown Reader formats local Markdown files and raw web text with authentic GitHub styling and capabilities. Key Features: • GitHub Look & Feel: Clean GitHub typography, tables, and task list checkboxes. • GitHub Alerts: Full support for [!NOTE], [!TIP], [!IMPORTANT], [!WARNING], and [!CAUTION] callouts. • Code Syntax Highlighting: GitHub Light & Dark themes with language badges and a one-click "Copy code" button. • Document Outline: Collapsible table of contents drawer with live scrollspy highlighting. • Math & Formulas: Fast LaTeX rendering via KaTeX ($inline$ and $$display$$). • Mermaid Diagrams: Automatically renders mermaid code blocks into SVG diagrams. • Dual View Mode: Seamlessly toggle between Rendered Preview and Raw markdown source. • Dark Mode & Width Toggle: System auto, light, or dark themes, plus standard (1012px) vs full-width layout. • 100% Client-Side & Private: Zero telemetry or data collection; runs entirely in your local browser.