SSEM Markdown Editor

by SSEM DEV · levelupsoft.com · Developer Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

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

Users

+8 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#95K

#79K among extensions

Version

1.0.2

updated 30 Sep 2026

Users

monthly, 8 months

Latest, 16 Oct 2026: 72 usersMove the mouse over the chart for any month

Ratings count

monthly, 8 months

Latest, 16 Oct 2026: 2 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About SSEM Markdown Editor

**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)