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Guide
About the Markdown Preview Editor
Markdown is a lightweight way to write formatted text using plain characters — # for headings, **bold**, -for lists — that renders into clean HTML. It's the format behind README files, GitHub issues, docs sites, and countless note apps, because it's fast to write and readable even before rendering.
This editor shows a live preview beside your text as you type, using GitHub Flavored Markdown (GFM) so tables, task lists, strikethrough, and fenced code blocks all render the way they do on GitHub. You can share a document by URL, and everything runs locally in your browser.
What GitHub Flavored Markdown adds
- Tables — pipe-delimited rows with alignment.
- Task lists —
- [ ]and- [x]checkboxes. - Fenced code blocks — triple backticks with language hints for syntax highlighting.
- Strikethrough —
~~text~~. - Autolinks — bare URLs become clickable automatically.
Write once, use anywhere
Because Markdown renders to standard HTML, what you write here works in READMEs, static site generators, documentation platforms, and chat tools. Use the live preview to get formatting right before pasting it into GitHub or your docs — no surprises when it renders on the other side.
How to use it
- 1Type or paste Markdown in the editor pane.
- 2Watch the formatted HTML render live in the preview pane.
- 3Use GFM features like tables, task lists, and fenced code blocks.
- 4Share the document via its URL, or copy the Markdown into your project.
Frequently asked questions
What Markdown flavor does this support?
GitHub Flavored Markdown (GFM), which extends standard Markdown with tables, task lists, strikethrough, autolinks, and fenced code blocks — the same rendering you see on GitHub.
Can I write tables?
Yes. Use pipes to separate columns and a divider row of dashes under the header. The preview renders them as formatted tables with optional column alignment.
How do I add a code block with highlighting?
Wrap the code in triple backticks and add a language name after the opening fence, like ```js, to enable syntax highlighting in the preview.
Can I share what I write?
Yes. The document can be encoded into the page URL so you can share a link that reopens your Markdown exactly as you left it.
Is my content uploaded?
No. Rendering happens in your browser, and shared links carry the content in the URL itself rather than on a server.