A three-pane Markdown editor, with an optional on-device AI assistant
Write Markdown with colour syntax highlighting and a live-rendered preview side by side, drag and drop images straight into your text, then export to standalone HTML, PDF or native .md - all fully offline. When you want a hand, an optional on-device AI assistant can summarise a document or rewrite a passage, entirely on your own computer.
Document list, colour-highlighted Markdown source, and a live-rendered preview - all visible at once, so you always see exactly what you're writing next to exactly how it will look.
Summarise a whole document with one click, or select a passage and rewrite it against your own instruction. Runs a small local language model entirely on your own computer - nothing about your document is sent anywhere, and it's always optional.
Headings, bold/italic, code, links, blockquotes and task lists are all coloured as you type in the source pane, so the raw Markdown itself is easy to scan - not just the rendered preview.
Drop an image straight into the editor and it's embedded in your Markdown automatically - no separate upload step, no broken relative paths to manage.
Find & replace across a document, plus a floating quick-format menu that appears on text selection for bold, italic, links and headings without reaching for the keyboard.
One click to a standalone HTML file, a PDF via your system print dialog, or a native .md file - so a document written here drops straight into a repo, an email, or wherever it needs to go next.
Right-click any document to open, duplicate, export or delete it without leaving the list - or import an existing .md file straight in and it appears alongside the rest.
Export your whole document set to a single JSON backup file, and import it back on another device whenever you like - nothing is ever locked in.
Every document lives only in this app on your device via local storage. The optional AI assistant runs entirely on your own computer too - nothing you write is ever sent anywhere.
Most people either write Markdown in a general-purpose text editor with no preview, or use a browser-based Markdown tool that needs a connection and sends your text to a server. Here's how a dedicated offline editor compares.
| Feature | Markdown Editor | A general text editor | A browser-based Markdown tool |
|---|---|---|---|
| Pricing model | Free | Varies | Often free, sometimes subscription |
| Live-rendered preview alongside the source | ✓ | ✕ | ✓ |
| Colour syntax highlighting for Markdown | ✓ | ✕ (unless configured) | ✓ |
| One-click export to HTML, PDF and .md | ✓ | ✕ | Varies |
| Works fully offline, nothing sent to a server | ✓ (AI assist included) | ✓ | ✕ (needs a connection) |
General comparison as of August 2026.
A Markdown syntax guide - source and live preview side by side
A recipe card, rendered cleanly from plain Markdown
Summarise with Metre2 AI - generated entirely on your own device
No. Writing, formatting, exporting and the document list all work fully offline - your documents live on your own device. The optional on-device AI assistant also runs entirely on your own computer once its model has loaded, so nothing about your writing is sent anywhere.
Summarise a whole document, or rewrite a selected passage against your own instruction (tighten it, make it more formal, fix the tone, and so on). It runs a small local language model on your own computer - nothing about your document is sent anywhere, and it's entirely optional.
Headings, bold/italic/strikethrough, inline code and fenced code blocks, links and images, blockquotes, ordered and unordered lists, task lists, and GitHub-flavoured tables - all rendered live in the preview pane as you type.
Standalone HTML, PDF (via your system print dialog), or native .md files - plus a full JSON backup of every document for safekeeping or moving to another device.
No, it's a free app.
No. Every document stays on your device via local storage. If you use the optional AI assistant, it runs entirely on your own computer - your text is never sent to a server.