Rich Markdown Preview

📖 **Beautiful Preview**
- Display Markdown files in a clean, readable format
- Syntax highlighting for code blocks
- Beautiful rendering of tables, lists, blockquotes, and images
- Emoji shortcode support (:smile: etc.)
- Automatic frontmatter (YAML) removal

🎨 **20+ Preset Themes**
- Popular themes including GitHub Dark/Light, Dracula, Nord, Tokyo Night, Monokai, and more
- Fully customizable color schemes
- 27 individual color settings for headings, links, code blocks, and more
- Create, save, and delete custom themes

🔤 **Font & Text Settings**
- Choose from 6 font families
- Noto Sans JP, Noto Serif JP, Zen Kaku Gothic New, and more
- Fonts optimized for Japanese text
- Fine-tune font size, line height, and letter spacing
- Adjustable content width (narrow / medium / wide / full)

📑 **Auto-Generated Table of Contents**
- Automatically generates TOC from headings
- Click to smoothly scroll to sections
- Highlights current position based on scroll

📁 **File Browser & Tab Management**
- Browse Markdown files in a directory tree
- Auto-reload on file changes
- Multi-file tab management with drag-and-drop reordering
- Drag and drop files directly to preview
- Right-click context menu (copy path, copy filename, etc.)

📋 **Copy Features**
- Copy Markdown source
- Copy as rich text (HTML)
- Copy file path and filename

🔍 **Search**
- Ctrl+F / Cmd+F to search within the preview
- Match count display with prev/next navigation
- Search result highlighting

📝 **Extended Markdown Support**
- Mermaid diagrams (flowcharts, sequence diagrams, etc.)
- Task lists (checkboxes)
- Footnotes ([^1] syntax)
- Full GitHub Flavored Markdown support

⚙️ **More**
- Auto-save settings
- Keyboard shortcuts
- Fully offline (except Google Fonts loading)