GitHub Markdown Reader

Render local Markdown files with authentic GitHub styling, alerts, syntax highlighting, math, and outline.

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.