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Cosmovex

Markdown Editor & Viewer

Markdown Editor for Android

Write and preview Markdown documents on your Android phone with a live split-view editor. Syntax highlighting, HTML export, and instant clipboard preview — no internet required.

Free on Google Play

Markdown is the go-to format for developers, bloggers, and writers who want clean, portable text formatting. But finding a good Markdown editor on Android that actually renders the output is harder than it should be. Markdown Editor & Viewer gives you a proper writing environment that works the way you expect.

The split-view editor shows your Markdown source on the left and the rendered preview on the right. Changes update in real-time as you type — no reload, no delay. Syntax highlighting makes your Markdown source readable, color-coding headings, code blocks, links, bold, italic, and lists.

Paste Markdown from your clipboard and preview it instantly. Open saved .md files from device storage, edit them, and save changes back. Export your documents to HTML for use in web projects or share plain text with other apps. All formatting — headings, ordered and unordered lists, code blocks with language hints, tables, images, and more — renders correctly.

Everything runs locally on your device with no internet required. Perfect for bloggers drafting posts offline, developers writing documentation, students taking structured notes, and anyone who prefers Markdown for their writing workflow.

A common frustration with mobile Markdown apps is that they treat your phone like a stripped-down laptop. Markdown Editor & Viewer was built the other way around — a Markdown app designed for the way you actually use a phone. Quick clipboard previews when someone sends you a Markdown snippet on Discord or Slack. One-tap export to HTML when you need to email a formatted document. A clean dark theme that doesn't strain your eyes on a long train ride.

Because everything happens on your device, your writing never leaves your phone. There's no cloud upload, no account, no telemetry on the content of your documents. If you're drafting a blog post on the way to work or writing personal notes you'd rather not sync to a third-party server, Markdown Editor & Viewer keeps your text where it belongs — with you.

What you get

Live split-view — source and preview side by side

Real-time rendering as you type

Syntax highlighting for Markdown source

Export to HTML or share as plain text

Clipboard auto-detect for instant preview

Open and save .md files from device storage

Full Markdown support — tables, code blocks, images

Works completely offline

Dark theme for comfortable writing

No ads pop-ups, no internet required

How to open and edit a Markdown (.md) file on Android

1
Install Markdown Editor & Viewer from Google Play
Open the Google Play Store on your phone, search for 'Markdown Editor & MD Viewer' by Cosmovex, and tap Install. The app is free and downloads in seconds.
2
Open the app and choose your file
Launch the app from your home screen. Tap the open-file icon and pick any .md or .markdown file from your device storage, SD card, Google Drive, or any cloud provider mounted through Android's file picker.
3
View the live preview or switch to edit mode
The file opens in split view — source on the left, rendered output on the right. Tap the toggle to flip between editor-only and preview-only modes on smaller screens.
4
Save changes or export to HTML
Tap save to write changes back to the original file. To share the rendered version, tap export and choose HTML — you can send it through email, messaging apps, or save it as a new file.

Who uses Markdown Editor & Viewer

For developers writing documentation

Edit README files on the go, review pull-request descriptions, or draft API docs while away from your laptop. Code blocks render with language-aware syntax styling so technical content stays readable.

For bloggers and writers

Draft posts in Markdown without an internet connection. Preview exactly how your formatting will look before publishing to platforms like Hashnode, dev.to, or your own site.

For students taking structured notes

Markdown's headings, lists, and code blocks make it ideal for lecture notes, especially for computer science and engineering students. Notes stay portable across every device you own.

For technical writers and PMs

Open Markdown specs shared by colleagues, review changes, and export to HTML for stakeholder emails. Clipboard auto-detect means you can paste a snippet from any chat app and read it as a formatted document.

Frequently asked questions

How do I open a .md file on Android?

Install Markdown Editor & MD Viewer from Google Play, open the app, and use the file picker to select the .md file from your device storage, SD card, or any cloud provider. The file opens in split view with rendered preview.

Can I preview rendered Markdown offline?

Yes. The app renders Markdown entirely on your device — no server round-trip and no internet connection needed. Headings, lists, code blocks with syntax highlighting, tables, links, and images all render locally.

Does it support tables, code blocks, and images?

Yes to all three. Tables render in a clean grid layout, code blocks support language-specific syntax highlighting (Python, JavaScript, Dart, Go, and dozens more), and images embedded with standard Markdown syntax display inline in the preview.

Can I export my Markdown to HTML or share it?

Yes. Tap the export menu and choose HTML to generate a standalone .html file you can email, save, or share through any Android share target. You can also share the raw Markdown as plain text to any other app.

Is there a dark theme?

Yes. The editor ships with a dark theme by default — easier on the eyes for long writing sessions and consistent with system-level dark mode on Android 10 and above.

Do I need an account or internet connection?

No. There is no sign-up, no login, no cloud sync, and no telemetry on the content of your documents. The app works completely offline. Your Markdown stays on your phone.

Can I edit files stored on Google Drive or my SD card?

Yes. Markdown Editor uses Android's native file picker, so any storage provider you've connected — internal storage, SD card, Google Drive, Dropbox, OneDrive — is available. You can open, edit, and save changes back to the same location.

Does it support CommonMark and GitHub-flavored Markdown?

Yes. The renderer covers CommonMark fully and the common GitHub-flavored extensions including tables, fenced code blocks with language hints, task lists, and strikethrough.