Markdown Previewer

Write Markdown, Watch It Render Live

Markdown is the writing format of the modern internet: README files, documentation, forum and chat posts, issue trackers, note apps and static-site blogs all speak it. Its premise is that formatting marks should be readable as plain text — **bold**, ## Heading, - list item — but until rendered, you are trusting memory that the syntax is right. This previewer removes the guesswork: type or paste Markdown on the left, see the formatted result on the right, live with every keystroke. When it looks right, copy either the Markdown source or the generated HTML.

Syntax the Previewer Supports

• Headings: # through ###### for levels one to six.
• Emphasis: **bold**, *italic*, ~~strikethrough~~, and `inline code`.
• Lists: unordered with - or *, ordered with 1., nested by indentation.
• Links and images: [text](url) and ![alt](url).
• Code blocks: fenced with triple backticks, rendered in monospace with formatting preserved.
• Blockquotes with >, horizontal rules with ---, and tables with pipe syntax.

How People Use the Previewer

1. Drafting READMEs and docs: verify the structure renders correctly before committing — a misaligned table or broken nested list in a README is the kind of error everyone sees and nobody mentions.
2. Learning Markdown: the instant feedback loop teaches the syntax in minutes; type, observe, adjust.
3. Converting to HTML: write comfortable Markdown, copy the generated HTML into a CMS, email template or legacy system that only accepts markup.
4. Checking pasted content: confirm that text copied from elsewhere survives as valid Markdown before posting it where edits are awkward.

The Syntax Mistakes Everyone Makes Once

Markdown's most common surprises are spacing rules. A heading needs a space after the hashes (#Heading renders as literal text — the previewer shows you immediately). A list needs a blank line before it when following a paragraph, or many renderers glue it into the paragraph. Code fences must close, or everything below becomes code — visible here the instant it happens. Tables need their separator row (---|---) or they render as pipes-and-text. Each of these costs minutes of confusion on a live site and zero seconds here, because the preview exposes the problem while your hands are still on the keyboard.

Scope and Privacy

The previewer implements standard Markdown with the table extension — the dialect that covers the overwhelming majority of real-world documents. Platform-specific extras (task-list checkboxes, footnotes, custom embeds) vary by site and are deliberately out of scope; verify those on the destination platform. The generated HTML is clean, semantic markup without inline styles, ready to drop into any page and inherit its styling. And like every tool here, rendering happens entirely in your browser: drafts, internal docs and unpublished content never leave the tab, which makes this previewer safe for exactly the confidential writing Markdown is so often used for.

Why Markdown Won

It is worth appreciating why this little format conquered technical writing: a Markdown document is fully readable even with no renderer at all. The asterisks and hashes degrade gracefully into visible, sensible punctuation, which means notes written today stay legible in any editor decades from now — no proprietary format, no broken layout, no vendor. Learning its dozen rules, with this previewer as the feedback loop, is among the best half-hours a writer or developer can invest.