Markdown Editor & Preview

Markdown is the writing format of READMEs, documentation, notes and half the web — but writing it blind, then rendering to check, breaks the flow. This editor keeps the two side by side: type Markdown on the left and watch clean HTML render on the right, instantly. A toolbar inserts the common constructs (headings, bold, links, lists, code blocks, tables) for the syntax you use rarely enough to forget, and the footer keeps count of your words and characters as you write. When the document is done, export the generated HTML in one click, or copy the Markdown itself for GitHub, your CMS or your notes app.

Quick Answer: Write Markdown on the left and see it rendered live on the right, with a formatting toolbar, word count and one-click HTML export.

Free Online Tool

Write on the left, read on the right — no render-and-pray.

How to Use the Markdown Editor & Preview

Write or paste Markdown in the left pane.
Watch the preview render on the right as you type.
Use the toolbar buttons to insert headings, emphasis, links, lists, code and tables.
Keep an eye on the live word and character count.
Export the HTML, or copy your Markdown for its final home.

Key Features

True live preview — every keystroke re-renders the HTML.
Toolbar for headings, bold, italic, links, images, lists, quotes, code and tables.
Supports tables, fenced code blocks, blockquotes and task-free lists.
Live word and character counts in the status bar.
One-click export of the generated HTML, safely sanitised.

Best Practices and Tips

Preview on a narrow pane from time to time: tables and code blocks that look fine wide can overflow in a phone-width README render.
Use heading levels in order (no skipping H2 to H4) — exported HTML inherits your structure, and accessibility tools read it.
Fenced code blocks with a language tag (“`js) export with that class attached, ready for syntax highlighters at the destination.
Draft long documentation here, then paste into GitHub — the preview approximates GitHub’s rendering closely for the common constructs.
The HTML export escapes raw HTML by default: what you see is Markdown’s output, not an injection risk.

Common Mistakes to Avoid

Mixing tabs and spaces in nested lists, the classic cause of a list rendering flattened.
Forgetting the blank line before a heading or list — Markdown needs air around blocks to recognise them.
Linking with reversed brackets: it is [text](url), and the toolbar button inserts the skeleton so you never have to recall it.
Expecting line breaks from single newlines; Markdown joins them — use a blank line for a new paragraph or two trailing spaces for a hard break.

Frequently Asked Questions

Which Markdown flavour does it render?

CommonMark-style core: headings, emphasis, strong, links, images, ordered and unordered lists, blockquotes, horizontal rules, inline code, fenced code blocks and pipe tables. It deliberately skips exotic extensions so the preview matches what GitHub, GitLab and most CMSs render.

Is my writing uploaded anywhere?

No. The editor and renderer run entirely in your browser; your draft exists only in the tab. Close it and the text is gone — save important work with the export buttons or by copying the Markdown out.

How does the HTML export work?

It packages exactly the HTML the preview shows, in a minimal standalone document, and downloads it as an .html file. Raw HTML typed into the editor is escaped rather than passed through, so exports are safe to open and share.

Can it render tables?

Yes — pipe tables with a header separator row render as real tables, alignment colons included (:—, :—:, —:). The toolbar inserts a small example table you can extend.

Does it count words like a word processor?

It counts the words in your Markdown source as you type, shown in the status bar alongside the character count — handy for documentation targets and content briefs with length requirements.