SimpleMD

simplemd.app

Extension Developer Tools45 users

Overview

Fast, minimalist markdown editor with Mermaid diagram support

SimpleMD is a fast, minimalist markdown editor that lives in your browser's side panel. Write and preview markdown in real-time with a clean, distraction-free interface. Key Features: • Live preview with instant rendering • Mermaid diagram support for flowcharts, sequence diagrams, and more • KaTeX math formula support • Syntax highlighting for code blocks • Multiple export options: PDF, PNG, HTML, and raw Markdown • Copy Mermaid diagrams to clipboard (PNG) • Google Drive sync to access your notes anywhere • File explorer with folder organization • Dark and light themes • Works offline — your notes are saved locally • Full-window mode for focused writing • Side panel mode for quick notes AI & Developer Tools (NEW): • MCP integration — push markdown directly from AI coding tools like Claude Code or Cursor • Auto-preview Mermaid diagrams generated by AI • List and update files from your terminal • Secure local connection — your data never leaves your machine • Works with any MCP-compatible client • Install with: npm install -g simplemd-mcp Perfect for developers, writers, students, and anyone who loves markdown. Open SimpleMD from your browser's side panel and start writing immediately — or connect your AI tools and let them write for you

0 out of 5
No ratings
Learn more about results and reviews.

Details

Version
1.4.3
Updated
June 27, 2026
Features
Offers in-app purchases
Flag concern
Size
3.37MiB
Languages
English (United States)
Developer
Inc
10416 N FM 620 Austin, TX 78726-1701 US
Website
Email
support@cafali.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

SimpleMD has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

SimpleMD handles the following:

Personally identifiable information

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

Claude Fable 5 Limit & Usage Tracker - ClaudeKarma

4.9

Track your Claude AI usage limits at a glance: Fable 5, session and weekly limits with a beautiful toolbar icon.

Vue.js devtools

2.6

Browser DevTools extension for debugging Vue.js applications.

MarkView: Markdown Viewer with Mermaid Diagrams, Math & Export

5.0

Markdown viewer with syntax highlighting, Mermaid diagrams, KaTeX math, TOC, DOCX/HTML export, folder browser & themes.

PixelParallel by htmlBurger

4.7

PixelParallel by htmlBurger - Pixel perfect HTML vs Design tool for developers

Markdown Reader

4.7

The best way to preview Markdown in your browser.

Notes Canvas

5.0

基于canvas的线上notes

Schema Builder for Structured Data

3.6

Easily build validated json-ld structured data markup for any webpage. Based on schema.org specification

ChatGPT for Gmail

4.1

Leverage the power of ChatGPT within your Gmail inbox.

ChatGPT to Markdown Pro - Code/LaTeX/Table

4.5

export chatgpt conversation to markdown with code/latex/table

Markdown Home Page

4.0

Transform your home page into a distraction-free Markdown editor. Get organized and productive with this easy-to-use extension.

Command Palette

3.7

A command palette to navigate in Google Chrome faster.

Markdown Editor for Chrome™

3.8

Create and view markdown files easily from anywhere with our simple, GitHub-flavored markdown editor.