Markdown Viewer Editor

OpenIoTHub

About this app

Markdown Viewer Editor — a powerful Markdown editor and viewer for Android. Write notes, documentation, and long-form content with a clean, Typora-inspired workflow: switch between WYSIWYG editing, source mode with line numbers, live preview, or a split view—all in one app.

CORE EDITING
• Rich Markdown editing with a formatting toolbar (headings, lists, tables, code, links, images, and more)
• Four modes: WYSIWYG, Source, Preview, and Split
• Focus mode and typewriter mode for distraction-free writing
• Find & replace with regex support; search across open documents
• Outline panel for quick navigation by headings

MARKDOWN & RICH CONTENT
• Full Markdown support including fenced code blocks with syntax highlighting
• Table of contents via [TOC]
• YAML front matter rendered as metadata
• GitHub-style alerts (NOTE, TIP, WARNING, and more)
• Footnotes, highlights, superscript/subscript
• KaTeX math: inline $...$ and block $$...$$
• Mermaid diagrams (flowcharts, sequence diagrams, Gantt, and more)
• Useful HTML embeds in preview (video, audio, details, and more)
• Copy code blocks to clipboard with one tap

FILES & WORKSPACE
• Open, save, and save-as; multi-tab editing
• Folder tree, flat file list, sorting, and quick open (fuzzy file search)
• Recent files on the welcome screen
• Auto-save with debounce (configurable); draft recovery after crashes
• External file change detection with reload prompts

IMAGES & MEDIA
• Paste images from clipboard; drag-and-drop where supported
• Relative/absolute image paths; configurable image storage folder
• Optional image upload via configurable shell command (e.g., PicGo-style workflows)

EXPORT & IMPORT
• Export to HTML (with GitHub-style styling options), PDF, Word (.docx), LaTeX (.tex), EPUB, and long PNG
• Import Word (.docx) to Markdown (basic conversion)
• Custom export shell templates; save Mermaid renders as PNG

VERSION CONTROL & SYNC
• Git history viewer for the current file
• Optional Git auto-sync on save (commit, pull --rebase, push) with status in the UI

OPTIONAL WRITING ASSISTANT (BYO API)
• Optional panel for compatible HTTP “chat completions” style endpoints—bring your own base URL, model name, and credentials. No built-in vendor; fully user-configured. Streaming responses supported for continue, summarize, translate, polish, explain, and custom prompts.

LOOK & FEEL
• Twelve built-in themes (light and dark), system or manual theme
• Custom preview CSS; adjustable font size and zoom
• Fullscreen; English/Chinese UI in settings

Perfect for developers, students, technical writers, and anyone who wants a serious Markdown app on Android—offline-friendly editing with optional sync and export when you need it.

Keywords users search for: markdown editor, markdown notes, md file editor, technical writing, documentation, KaTeX math, Mermaid diagram, PDF export, EPUB export, split markdown editor, dark mode markdown, git markdown.

What’s new

fix some bug