web-markdown-editor

Web Markdown Editor - Offline Edition

English

简体中文

The offline edition bundles all required resources locally and works without an internet connection.

📋 Features

• Live Markdown preview and syntax highlighting
• KaTeX math and Mermaid diagrams
• PDF, PNG, and HTML export
• English and Simplified Chinese interface
• Multiple themes, table of contents, and synchronized scrolling
• Fully local operation

🚀 Usage

1. Keep markdown-editor-offline.html and the assets/ directory together.
2. Open markdown-editor-offline.html in a modern browser.
3. Start editing.

offline/
├── markdown-editor-offline.html
└── assets/
    ├── css/
    └── js/

🔒 Privacy

• Runs locally and does not upload documents
• Requires no registration or network connection
• Stores documents and preferences locally

🌐 Browser support

Recommended versions:

• Chrome 90+
• Edge 90+
• Firefox 88+
• Safari 14+

The File System Access API is required for direct local-file saving. Browser permission may be required for some export operations.

📦 Bundled libraries

Library	Version	Purpose
Marked.js	12.0.0	Markdown parsing
Highlight.js	11.9.0 / 11.11.1 (themes)	Syntax highlighting
KaTeX	0.16.43	Math rendering
Mermaid	11.13.0	Diagrams
html2pdf.js	0.14.0	PDF export
DOMPurify	3.2.6	XSS protection
html2canvas	1.4.1	Image export
Bootstrap	5.3.8	UI framework
Bootstrap Icons	1.13.1	Icons
GitHub Markdown CSS	5.9.0	Markdown styles

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