MarkdownLab is a fast, fully offline PWA Markdown editor for devs and technical writers tired of broken diagrams, math rendering, and previews.
Built with vanilla JS — no backend, no signup, no tracking.
Key Features:
• 10+ Mermaid diagrams
• Full KaTeX Math (with MathML)
• Complete GFM incl. alerts
• 190+ syntax highlighting
• Multi-file workspace
• Vector PDF export
• 100% offline
Perfect for READMEs, design docs, and research notes.
