About CoreMarkdown
We believe writing technical documentation, research papers, and code notes should be lightning-fast, visually stunning, and 100% private.
The CoreMarkdown Story
Technical writing is at the core of software engineering, scientific research, and modern knowledge work. Yet, writers are frequently forced to choose between heavyweight desktop applications, clunky browser plugins, or cloud-based editors that track keystrokes and demand mandatory logins.
CoreMarkdown was created to deliver the best of all worlds: the agility of a lightweight web app, the typesetting power of LaTeX and Mermaid.js, the speed of 60 FPS synchronized scrolling, and the peace of mind that comes from a local-first, 100% client-side architecture.
100% Client-Side Privacy
Your documents, equations, and diagrams never leave your machine. Everything is parsed, rendered, and stored inside your browser's local storage.
Zero-Latency Performance
Instant AST compilation and 60 FPS bi-directional scroll synchronization ensure that your preview updates seamlessly as fast as you type.
Advanced Formatting Suite
Native KaTeX LaTeX math equation rendering, Mermaid architecture diagrams, GFM tables, syntax highlighting, and presentation slide decks.
Universal Multi-Format Export
1-click export to print-ready PDF, standalone self-contained HTML, raw Markdown, and copy formatted Rich Text directly to Notion or Google Docs.
Open Web Technologies
CoreMarkdown is crafted with modern, high-performance web standards:
- Astro 5 & Tailwind CSS: Server-first static optimization with modern tokenized typography and dark mode aesthetics.
- Marked.js Engine: Compliant GitHub Flavored Markdown (GFM) tokenization and AST parsing.
- KaTeX Engine: High-speed client-side mathematical typesetting.
- Mermaid.js: Scalable vector graphics (SVG) diagram compiler.
Start Writing With CoreMarkdown Today
No sign-up, no credit card, and zero cloud tracking. Open the studio and experience pure writing speed.
Launch Markdown Studio