Overview
Markdown won because it respects the writer. Instead of wrestling with formatting toolbars and hidden styles, you type plain text with a few intuitive marks — # for headings, * for emphasis, - for lists — and readable, structured documents emerge. The catch has always been seeing the result without a round-trip through some other application. This previewer closes that loop, rendering your Markdown into formatted output the instant you type it.
The supported subset covers the everyday ninety percent: headings, bold and italic emphasis, inline code and fenced code blocks, bulleted and numbered lists, blockquotes, links, images, tables and horizontal rules. When the preview looks right, copy the generated HTML for pasting into a CMS or website, or download the source Markdown to keep the portable original.
Why did plain-text formatting win?
Because formatting locked inside proprietary files is fragile. A word-processor document from 1997 is an archaeology project; a Markdown file from 2004 opens in anything and reads fine even unrendered. Markdown's genius was making the source itself readable — the marks fade into the text rather than cluttering it — so the same file serves as both draft and archive, editable with tools as simple as Notepad.
That durability is why developers write documentation in it, writers draft books in it, and platforms from GitHub to Reddit to Stack Overflow render it natively. Learning the dozen or so marks takes an afternoon; this previewer exists so that afternoon includes instant visual feedback instead of guesswork, which is how syntax actually sticks.
Features
- Live side-by-side preview updating with every keystroke.
- Full everyday subset: headings, emphasis, code, lists, quotes, links, images, tables, rules.
- Copy as HTML for pasting into editors and content systems.
- Download .md to keep the portable source file.
- Clear button for a fresh document.
- Safe rendering: raw HTML in the source is escaped, not executed.
Benefits
- Learn by seeing. Every mark shows its effect instantly.
- Draft anywhere. Plain text works in any editor, on any device.
- Ship the HTML. Copy rendered output straight into your CMS.
- Keep the source. The .md file stays readable forever.
Who can use it
Writers drafting in plain text without formatting distractions, developers writing READMEs and project documentation, students taking structured, portable notes, bloggers composing posts for Markdown-friendly publishing platforms, and anyone learning the syntax for the first time. Technical authors who live in docs-as-code workflows, note-takers migrating away from proprietary apps, and forum regulars will all find the live preview shortens the learning curve dramatically.
How to use
- Type or paste Markdown into the left pane (a sample is preloaded).
- Watch the formatted preview build on the right as you type.
- Refine until the preview matches what you want.
- Copy the HTML for your site, or download the .md source.
- Press Clear to start a fresh document.
Frequently asked questions
Which Markdown flavour is supported?
The common core shared by nearly all flavours: ATX headings (#), bold/italic/strikethrough emphasis, inline and fenced code blocks, unordered and ordered lists, blockquotes, links, images, tables and horizontal rules. Exotic extensions — footnotes, definition lists, task lists, math notation — are outside the subset. What is supported covers the vast majority of everyday documents, from notes to full articles.
Is it safe to preview Markdown I did not write?
Yes. The renderer escapes any raw HTML found in the source instead of executing it, so pasted Markdown cannot run scripts or load remote content through the preview. Treat it like viewing text, not like opening a web page. This makes it safe to inspect Markdown copied from emails, chats or untrusted documents.
Why does my table not render?
Tables need the complete structure: a header row, a delimiter row of dashes and pipes, then the body rows — with consistent pipe counts on every row. The most common mistake is a missing delimiter row or a row with fewer cells than the header. Compare your attempt with the preloaded sample, which includes a working table you can copy and adapt.
Can I use this for a whole article?
Absolutely — there is no length limit, and the Download .md button preserves the portable source for later editing. Many writers draft entire posts here and then copy the HTML into their publishing platform in one move. The preview stays responsive on long documents, and the source remains a plain-text file you can open anywhere, forever.
Does the previewer store my documents?
No. Everything renders locally in your browser the moment you type; closing the tab discards the text unless you downloaded it first. There is no account, no cloud sync and no autosave to a server. For work you want to keep, the Download .md button is your save mechanism.
Conclusion
Write plain, see rich. Markdown rewards the habit of simple, durable source files — and a live previewer makes the reward immediate, keystroke by keystroke.