Convert Markdown to HTML instantly. Free online Markdown to HTML converter using the marked library — supports headings, lists, code, links, tables, and more.
The Tooloogle Markdown to HTML Converter turns any Markdown document — a README, a blog draft, documentation, release notes, a chat message, or a private journal entry — into clean, semantic HTML you can paste into a CMS, an email, a static site generator, or any HTML-aware system. Conversion is instant: type or paste Markdown on the left, the rendered HTML appears on the right immediately. Everything runs in your browser using the well-known marked library; nothing is uploaded.
Markdown is the writing format of choice for developers, technical writers, bloggers, and anyone who values plain-text simplicity. But many publishing systems — older CMSes, email templates, custom web apps, learning management systems, and many corporate intranets — need raw HTML, not Markdown. Bridging the two is a daily task: pasting a draft into Confluence, generating HTML for an HTML-only newsletter, embedding documentation snippets into a web app, or sharing rendered output in a chat that doesn't support Markdown. A converter that handles GitHub-flavored Markdown features — tables, fenced code blocks, task lists, autolinks — saves hours over manually wrapping every paragraph and list in HTML tags.
Live conversion — output updates as you type. No button to click; the HTML refreshes on every keystroke.
Powered by marked — the most widely used Markdown parser in the JavaScript ecosystem, with broad CommonMark and GitHub-flavored Markdown support.
Full Markdown syntax — supports headings (#, ##, ...), emphasis (**bold**, *italic*), unordered and ordered lists, blockquotes, fenced code blocks, inline code, links, images, horizontal rules, and tables.
Plain HTML output — the converter emits standards-compliant HTML you can paste anywhere. No proprietary tags, no editor-specific markup, no inline styles.
Inline error reporting — if conversion fails for any reason, an error banner explains what happened.
One-click copy — copy the HTML output to your clipboard for pasting into a CMS, email, or HTML editor.
Browser-only — conversion happens entirely in JavaScript inside your tab. Your draft never touches a server.
Paste or type your Markdown into the "Markdown Input" textarea. Use any standard CommonMark or GitHub-flavored Markdown syntax.
Watch the "HTML Output" textarea fill with the rendered HTML in real time.
Click the copy button below the output to put the HTML on your clipboard.
Paste the HTML wherever you need it — a CMS rich-text editor in HTML mode, an email template, a documentation page, a custom web app, or a static-site generator that accepts raw HTML.
Edit your Markdown to iterate; the HTML output regenerates instantly so you can tweak phrasing or formatting and see the result immediately.
Bloggers draft posts in Markdown for the writing comfort, then convert to HTML to paste into older CMSes that don't accept Markdown natively. Technical writers compose documentation in Markdown and convert to HTML for delivery to teams that publish on intranets without Markdown support. Developers convert README excerpts to HTML for embedding in product UIs. Email marketers convert Markdown drafts to the HTML format their email service provider expects. Educators convert Markdown lecture notes to HTML for upload into LMS platforms. Open-source maintainers preview how a README will render before pushing to GitHub or generate HTML release notes for distribution outside GitHub. Newsletter authors convert Markdown drafts to HTML for plain-HTML mailing lists. Customer-support teams convert Markdown knowledge-base drafts to HTML for upload into legacy ticketing systems.
The converter uses marked, which implements CommonMark plus the most commonly used GitHub-flavored extensions. Headings via # through ###### become <h1> through <h6>. Inline emphasis: *text* or _text_ becomes <em>; **text** or __text__ becomes <strong>. Inline code wrapped in single backticks becomes <code>. Fenced code blocks (triple backticks) become <pre><code>. Unordered lists with -, *, or + become <ul>; ordered lists with 1. become <ol>. Links [text](url) become <a>; images  become <img>. Blockquotes prefixed with > become <blockquote>. Horizontal rules from ---, ***, or ___ become <hr>. Tables using pipe syntax become <table>. HTML embedded directly in your Markdown passes through untouched (handy for the rare cases Markdown can't express).
Always preview the rendered output (paste it into a browser as .html or use the "Open in browser" feature in your editor) before publishing — the textarea shows the raw HTML source, not a rendered preview. For long-form documents, prefer ATX-style headings (## Heading) over Setext-style (Heading\n---) — ATX is unambiguous and easier to update. Avoid mixing tabs and spaces in code blocks; pick one. For tables, line up pipes and dashes for readability in the source even though Markdown doesn't require it. Be aware of HTML escaping: special characters in your Markdown (<, >, &) inside text content are converted to the safe HTML entities <, >, &; if you need a literal HTML tag, wrap it in your Markdown explicitly. For pasting into CMS rich-text editors, switch the editor to its HTML / source mode before pasting; otherwise the editor may double-escape or strip your HTML. If your destination is a security-sensitive system, sanitize the HTML output (e.g. with DOMPurify) before injecting into a page; marked emits HTML faithfully but does not sanitize untrusted Markdown.
Markdown conversion happens entirely in your browser using the marked library bundled into the page. No upload, no API calls, no server-side rendering. This matters because Markdown drafts often contain sensitive content: unreleased blog posts, internal documentation, draft customer communications, private notes, or even credentials accidentally pasted into a draft. Pasting any of that into a server-backed converter risks logging, caching, or interception. Tooloogle's converter has no server in the conversion path. Verify by opening DevTools, pasting your draft, and watching the Network tab stay quiet.
Tooloogle's Markdown to HTML converter is intentionally simple: one input, one output, live updates, copy button. No signup, no ads in the conversion flow, no "upgrade to remove watermark" gates. The HTML output is plain and standards-compliant, so it pastes cleanly into any HTML-aware system without proprietary tags or inline styles. The converter pairs naturally with the Tooloogle CSS and HTML beautifiers if you want to clean up the output further, and with the URL Encoder if you need to embed the HTML in a query string. Bookmark this page next to your blogging editor, your email client, or your documentation tool — the next time something demands HTML when you have Markdown, you'll save yourself a tedious manual rewrite.
How to Use Markdown to HTML Converter - Convert Markdown to HTML Online
Enter or paste the content you want to process using the markdown to html converter - convert markdown to html online.
Adjust any available settings or options to customize the output.
View, copy, or download your processed results instantly.
Convert Markdown to HTML instantly. Free online Markdown to HTML converter using the marked library — supports headings, lists, code, links, tables, and more.
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