Open a .md file or paste Markdown and read it rendered — GitHub styling, callouts, math, diagrams and code highlighting, with a heading outline, five reading styles and one-click export. Nothing is uploaded.
Drop a .md file anywhere on this panel, or paste Markdown below, and read it
rendered the way GitHub, Obsidian and VS Code render it.
function greet(name) {
return `Hello, ${name}!`;
}| Name | Role | Status |
|---|---|---|
| Alice | Developer | Active |
| Bob | Designer | Away |
Inline math works with E=mc^2.
a^2 + b^2 = c^2TIP
Switch to Split to see the source and the rendered document side by side,
with the two panes scrolling together.
Visit MarkdownTools for the rest of the toolkit.
.md file anywhere to open it.Drag a .md file onto the page and it is read by your browser with the File API. Nothing is sent to a MarkdownTools server, which matters for work notes and private vault files.
The rendered pane uses a measured line length and a paper background, so a long README is comfortable to read rather than stretched across a 27-inch monitor. Full width is one click away.
Every heading down to level three becomes a clickable entry in the sidebar, so you can navigate a long specification without scrolling through it.
In Split mode the source and the rendered document scroll together, so you can find the syntax that produced a particular block.
Tables, task lists, footnotes, strikethrough, autolinks, and fenced code blocks with syntax highlighting for 190+ languages via highlight.js.
KaTeX renders inline and display math, mermaid code blocks render as diagrams, and blockquotes such as > [!NOTE] render as GitHub documentation callouts.
GitHub, Notion, Academic, Brief and Terminal — the same five themes the PDF exporter uses, so what you read is what you print.
Copy or download the Markdown, copy or download standalone HTML with working heading anchors, or print the rendered document straight to PDF.
A .md file is plain text, so every operating system will happily open it — in the wrong program. Windows hands it to Notepad, macOS to TextEdit, and both show you the raw syntax: literal ## in front of headings, asterisks around bold text, and a wall of pipe characters where a table should be. That is the file working correctly; it just is not being rendered.
Rendering it normally means installing something — VS Code with the built-in preview, Obsidian, Typora, or a browser extension. If you only need to read the file once, drop it on the viewer above instead. The browser reads the file locally, renders it with the same GitHub Flavored Markdown rules those editors use, and you can close the tab when you are done. That works identically on a work laptop where you cannot install software, on a phone, and on a Chromebook.
The most common files people need to read this way are README.md from a cloned repository, notes exported from Obsidian or Notion, changelogs, and answers copied out of ChatGPT or Claude — which are written in Markdown even when the chat window hides it. All of them render here, including the tables and code blocks that plain-text editors destroy.
Drag the file onto the viewer above, or click Open .md file and pick it. The file is read locally by your browser and rendered immediately — there is no upload, no account, and no size limit beyond the 1 MB guard that keeps the page responsive.
Yes. This viewer is a web page, so any modern browser on Windows, macOS, Linux, iOS or Android can open and render a Markdown file with it. That is usually faster than installing VS Code, Obsidian or a Markdown extension just to read one README.
No. Opening a file uses the browser File API, and rendering, exporting and printing all run in the page. Open your browser Network tab while you drop a file in — no request carries the content.
The viewer is for reading a document you already have: outline navigation, reading styles, and export. The Markdown editor is for writing one — it adds syntax-highlighted source, working spell check, find and replace, keyboard shortcuts, autosave and twelve export destinations.
GitHub Flavored Markdown: tables, task lists, strikethrough, autolinks and fenced code blocks, plus GitHub-style alert callouts, KaTeX math and Mermaid diagrams. Raw HTML in the source is sanitised before it is rendered.
Yes. Save as PDF prints the rendered document — not the page around it — using the reading style you picked, so headers, tables and code blocks keep their formatting. For page sizes, margins, templates and a table of contents, use the dedicated Markdown to PDF converter.
After your first visit, yes. The site registers a service worker, so the viewer keeps loading and rendering local files when you are offline.
Write Markdown with working spell check, find and replace, and twelve export formats.
Every element with its syntax, its rendered output, and a free PDF.
Page sizes, margins, templates and a table of contents for print-ready exports.
Clean, standalone HTML you can paste into a CMS.
Build and export flowcharts, sequence diagrams and Gantt charts.
PDF, Word, HTML, CSV, Excel and JSON in and out of Markdown.