MD Viewer: Markdown Editor

MD Viewer is an offline Markdown viewer and editor for Android. It scans your phone for .md / .markdown files, lets you switch between View, Edit, and Table of Contents, then exports to PDF or HTML — with no account and no cloud login.

What is MD Viewer?

Opening a Markdown file in a file manager usually shows raw # and * characters. Pasting into a notes app splits your source files. Heavy knowledge-base apps are overkill when you just need to read and tweak a local vault on your phone. MD Viewer finds local Markdown, renders it for mobile reading, lets you edit lightly, and shares PDF or HTML when you need to send it.

Who is it for?

• Developers who read and patch GitHub READMEs, specs, and API docs on the go

• Students who keep lecture notes, interview prep, math, and diagrams in Markdown

• Writers who want diaries, meeting notes, and checklists as local .md files

• Obsidian users who want to open a local vault on Android without breaking wiki links, callouts, highlights, or Frontmatter. This is a companion for local files, not an Obsidian replacement — no graph, sync, or plugin ecosystem.

Key features

• Scan Markdown files — Add internal, SD, or USB folders, or run a full scan to list .md files in one screen. Search by name, sort by recent or name, pin favorites, and jump back to recents.

• Open md files — Open .md / .markdown from Files, Downloads, or Drive. Shared text from messengers or browsers, and clipboard text, become new Markdown notes.

• View, Edit, TOC — Headings, lists, tables, syntax-highlighted code, and task checklists render for mobile. Switch View and Edit on the same file. Jump via the TOC tab. Reading position is restored per file.

• Live preview — Split the editor and preview horizontally or vertically with synced scrolling. Optional block live preview shows source only on the cursor block.

• Obsidian-compatible syntax — [[wikilinks]] with autocomplete and navigation, callouts (> [!NOTE]), ==highlights==, and YAML Frontmatter property cards. Desktop syntax stays intact on the phone.

• Mermaid and KaTeX — mermaid diagrams and $…$ / $$…$$ math render in View, preview, PDF, and HTML. Free, with no Pro lock.

• Find and replace, smart typing — In-document search, find and replace while editing, auto-save, undo/redo, auto-pairing, checkbox toggle, and table cell movement.

• Paste images — Insert clipboard images into app cache or an attachments/ folder next to the note.

• PDF and HTML export — Share Markdown as PDF, standalone HTML, or clean HTML for blogs. Export a folder of notes as an HTML zip. Copy code blocks from View.

• Home screen — Pin a file shortcut or add the recent Markdown widget for one-tap reopen.

• Reading quality — Font size, word count and reading time, Light / Dark / AMOLED / Sepia. Large documents use a lighter preview path.

• Offline and languages — Files stay on the device. The UI supports 27 languages. Start from samples such as README, interview prep, lecture notes, and Obsidian-compatible syntax.

FAQ

How do I open md files on Android?

Install MD Viewer, then open a .md file from Files or Drive with this app. Inside the app, add a folder or run a full scan to collect Markdown from the device.

Can I convert Markdown to PDF?

Yes. Export PDF from View or Edit and share it through the Android share sheet to messengers, email, or Drive. HTML, clean HTML, and folder zip are also available.

Can I read Obsidian notes on my phone?

You can open local vault .md files and render wiki links, callouts, highlights, and Frontmatter. There is no graph view, sync, or community plugins. MD Viewer does not replace Obsidian.

Does it work offline?

Yes. No account is required. View, edit, and export local files without the internet.

Download MD Viewer to find, read, edit, and share Markdown on Android.