SimpleMD

simplemd.app

Extension Developer Tools31 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

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Details

Version
1.3.2
Updated
February 19, 2026
Features
Offers in-app purchases
Flag concern
Size
3.36MiB
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

Markdown Editor for Chrome™

3.8

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

Markdown to PDF converter

3.7

Convert Markdown to clean PDFs with Mermaid diagrams and KaTeX math support.

PlantUML to Mermaid Converter

5.0

Convert PlantUML diagrams to Mermaid syntax

Mermaid to PlantUML Converter

3.0

Converts Mermaid diagrams to PlantUML

Mermaid Graphical Editor

4.7

GUI support for editing Mermaid(But Now, Support Flowchart and Sequence diagram, Class diagram, ER diagram, and State diagram Only)

Mermaid diagram renderer for GitHub

5.0

Render mermaid diagrams in markdown files in GitHub and GitHub Gist (mermaid@8.14.0).

Mermaid Diagrams for Bitbucket

0.0

Renders Mermaid diagram blocks in Bitbucket pull request descriptions and comments.

Chart Maker

5.0

Simple online chart maker and generator to quickly create graphs and diagrams. Works with circle, line and pie chart graph maker

ScribbleVet Browser Companion

5.0

Quickly sync your ScribbleVet notes to your PIMS

Image To LaTeX

4.7

Use Image To LaTeX to convert pictures into LaTeX code instantly. This simple picture to LaTeX converter is fast and accurate.

Mermaid Translator

0.0

Render Mermaid diagram from selected text

Mermaid Diagram

4.8

Use Mermaid diagram: fast mermaid.js diagram maker & flow chart generator with Mermaid live editor for instant visual workflows.