Markdown ↔ HTML converter
Bidirectional. Edit either side, the other updates live. Headings, lists, links, code, tables — covered.
<h1>AI Search visibility</h1> <blockquote>Why your site needs to show up in <strong>ChatGPT</strong> and <strong>Perplexity</strong> answers.</blockquote> <p>AI search is the new ranking surface. When someone asks ChatGPT about your industry, the answer either cites your domain or it doesn't.</p> <h2>Three structural moves</h2> <ol><li>Publish an <code>llms.txt</code> at your domain root.</li><li>Add structured data — <em>Article</em>, <em>FAQ</em>, or <em>HowTo</em> schema.</li><li>Write content that <strong>directly answers</strong> target queries.</li></ol> <p>For step 1, see <a href="/tools/llms-txt-generator">our llms.txt generator</a>.</p> <pre><code>User-agent: GPTBot Allow: /</code></pre> <hr /> <table><thead><tr><th>Engine</th><th>Crawl pattern</th></tr></thead><tbody><tr><td>ChatGPT</td><td>GPTBot</td></tr><tr><td>Perplexity</td><td>PerplexityBot</td></tr><tr><td>Claude</td><td>ClaudeBot</td></tr></tbody></table>
When to convert Markdown to HTML
Most modern blogging platforms accept Markdown directly — Ghost, Hugo, Astro, Notion exports, GitHub READMEs. But the moment you need to drop content into a CMS field that expects HTML, paste into a marketing email, or include rich-text inside a website builder's embed block, you need clean HTML output.
The reverse is just as common: you scrape HTML from a competitor's blog and want to turn it into editable Markdown for your draft, or you copy from a Word doc and need to clean the output.
What this converter handles
- Headings (H1–H6)
- Bold, italic, inline code, links
- Ordered and unordered lists (single level)
- Fenced code blocks with language tags
- Blockquotes
- Horizontal rules
- Pipe tables (header + body)
Edge cases — nested lists, footnotes, definition lists, embedded HTML inside Markdown, complex inline formatting — fall through as best-effort. For round-trip-perfect Markdown rendering on thousands of articles, reach for a real library like marked, markdown-it, or remark.
FAQ
Why does my converted HTML look different from what the source rendered?
Lightweight regex-based converters like this one trade strict spec compliance for predictability and zero dependencies. Common patterns work; edge cases (nested lists, mixed inline styles, raw HTML inside Markdown) might not match a full Markdown library exactly. For 95% of blog and docs content, the output is identical or near-identical.
Will my content be saved?
No. Everything runs in your browser — there's no server call. The text never leaves the page.
How do I round-trip content (Markdown → HTML → Markdown) without losing formatting?
Round-trips through any lightweight converter risk subtle losses. For high-fidelity round-tripping use a single library both ways (marked + turndown, or remark/rehype). For most quick-paste workflows the output here is good enough.
Can I use this for content moving between Ghost / Notion / WordPress?
Yes. The most common use case is exporting a Notion page (which gives you Markdown) and converting to HTML for a CMS that doesn't accept Markdown directly. Or scraping a competitor's article HTML into Markdown to use as a structural template for your own draft.
Why do I need to paste — can it fetch a URL?
Not in this tool. Fetching arbitrary URLs requires SSRF defenses, rate limiting, and server-side parsing. The paste-only flow is faster, has zero rate limit, and keeps the input private to your browser.
Can I use the HTML output directly in a <head> tag?
No — this is body content (paragraphs, headings, lists). For meta tags use the schema-markup-generator or the SERP preview tool.
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