SSEM Markdown Editor

View and edit Markdown files in your browser with syntax highlighting, live preview, and multiple view modes.

**v1.0.2 Update** - Fixed Mermaid diagram rendering - Added quadrantChart, mindmap support --- SSEM Markdown Editor is a powerful Chrome extension for viewing and editing Markdown documents directly in your browser. ## Features ### View Modes - **Editor Mode**: Edit Markdown source code with syntax highlighting and line numbers - **Split Mode**: Side-by-side editor and preview for real-time editing - **Viewer Mode**: Clean, beautifully rendered Markdown document view ### Editor Features - Line numbers - Syntax highlighting - Real-time preview (in Split mode) - Download files with Ctrl/Cmd + S ### Document Features - Supports file://, http://, https:// protocols - Supports .md, .mkd, .mdx, .markdown extensions - Rich syntax plugins: emoji, math equations, flowcharts, Gantt charts, checkboxes, and more - Light/Dark themes with code highlighting - Auto-refresh on file changes - Table of Contents (TOC) sidebar ### Keyboard Shortcuts - Ctrl/Cmd + S: Download file - Ctrl/Cmd + E: Toggle view mode - Alt + Shift + B: Toggle sidebar - Alt + Shift + C: Toggle centered alignment - Alt + Shift + R: Toggle auto-refresh - Alt + Shift + T: Toggle theme Perfect for developers, writers, and anyone who works with Markdown files! Built by SSEM DEV (https://ssem.ai) Based on md-reader by Bener (https://github.com/md-reader/md-reader)