Markdown Editor Pro

A powerful, feature-rich markdown editor built with React, TypeScript, and Tailwind CSS. This editor provides a seamless writing experience with live preview, math equation support, and beautiful GitHub-inspired styling. - 📝 IDE-style Split View - CodeMirror 6 editor with live preview side by side, draggable divider, bidirectional scroll sync - 🗂️ Multiple Documents - Tabbed editing, autosaved to your browser — nothing ever leaves your machine - 🧭 Outline Pane - Heading tree, click to jump anywhere in the document - 💾 Real File Editing - Open and save local .md files natively (Ctrl+S) via the File System Access API - 🧮 Math Support - Full LaTeX equation support via KaTeX - 🧜 Mermaid Diagrams - Flowcharts, sequence and class diagrams rendered in-browser (lazy-loaded) - 📋 GitHub Flavored Markdown - Tables, task lists, strikethrough, and more - 🛠️ Formatting Toolbar - Plus keyboard shortcuts (Ctrl+B/I/K, Ctrl+F search) - 🖼️ Image Paste - Paste or drag-drop images straight into the editor as self-contained base64 - 📤 Export - Standalone HTML file or print-to-PDF - ✨ AI Assist (BYOK) - Improve, proofread, summarize or continue writing with your own API key (OpenRouter, OpenAI, or local Ollama) - 🌙 Dark/Light Theme - Class-based theming with a toggle, follows your system by default - ✍️ Focus & Typewriter Modes - Distraction-free writing - 📴 Offline PWA - Installable as an app; works with no internet - 📊 Real-time Stats - Line/column, character, word, and line count Inline math: $E = mc^2$ renders as $E = mc^2$ Markdown Editor Pro is the open-source project seehiong/md-editor-pro (https://github.com/seehiong/md-editor-pro) by seehiong, released under MIT. Ion packages it unmodified from commit bc172b8e3764, adding only a manifest, an icon and a storage compatibility script.

Written by seehiong, published to Oikou by Ben Grande.

• ★ 163 stars on GitHub
• Licence: MIT
• Built from commit bc172b8e3764

View the repository on GitHub

Not rated. Nobody has said who this app is suitable for, so Personal Clouds and the Oikou app treat it as 18+.

Internet

It asks to reach these hosts, and no others:

• openrouter.ai
• cdn.jsdelivr.net
• api.openai.com

Personal Cloud tools

• Keep a database of its own on your Personal Cloud ion.db

Notifications

It does not send push notifications.

Storage

Up to 16 MB on your Personal Cloud.

Sign in to add this web app to a Personal Cloud of yours. It runs there, on your own computer, and you open it from there; nothing is installed on your phone.

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