Markdown to HTML converter
Paste your Markdown and instantly get clean HTML you can copy, plus a live preview of how it will look. GitHub-flavored Markdown is supported, and everything is converted right in your browser.
How to use Markdown to HTML
- 1
Paste your Markdown
Type or paste Markdown into the input box.
- 2
Watch it convert
Clean HTML is generated instantly as you type.
- 3
Check the preview
Switch to the preview to see exactly how the rendered output looks.
- 4
Copy the HTML
Switch to the HTML view and copy the result with one click.
From Markdown to ready-to-use HTML
Markdown is a wonderfully simple way to write formatted text: a few hashes make headings, asterisks make things bold or italic, and dashes make lists, all in plain text that stays readable as you type. But to publish that content on the web, in an email template or inside an app, you usually need it as HTML. Converting by hand is tedious and error-prone, especially for anything with nested lists, links, code blocks or tables. This tool does it in an instant. You paste your Markdown and it produces clean, correct HTML that you can copy straight into a page, a template or a content management system. There is no need to remember the exact tags or worry about closing them properly — the converter handles the translation faithfully, so you can keep writing in comfortable Markdown and get production-ready HTML whenever you need it, without switching tools or doing the markup yourself.
See a live preview as you go
Converting blindly is risky — you cannot be sure the output is right until you see it rendered. In1 gives you both the HTML source and a live preview, so you can check your work without leaving the tool. The preview shows your Markdown rendered the way a browser would display it: headings sized correctly, lists indented, links styled, code blocks set in a monospace box, and tables drawn with borders. As you adjust your Markdown, the preview keeps up, so you can catch a malformed list or a missing blank line immediately and fix it on the spot. This tight feedback loop turns writing Markdown into a confident, visual process rather than a guess-and-check one. When the preview looks right, you know the HTML is right too, and you can switch to the source view and copy it knowing exactly what it will produce wherever you paste it.
GitHub-flavored Markdown supported
Not all Markdown is the same, and most people who write it day to day are actually using GitHub-flavored Markdown (GFM), the popular extended dialect. In1 supports it, so the features you rely on work as expected: fenced code blocks with triple backticks, tables built from pipes and dashes, automatic linking, and the other conveniences GFM adds on top of the original specification. That means the Markdown you already write in README files, issues, notes apps and documentation converts cleanly here without surprises or stripped-out features. Supporting the dialect people genuinely use — rather than a stricter, more limited base version — is what makes the converter practical for real work. Whether you are turning a README into a web page, converting documentation, or moving notes into a CMS, the output reflects the full set of formatting you put in, including the tables and code blocks that simpler converters often mishandle.
Private by design — converted in your browser
The content you convert might be documentation, draft articles, internal notes or anything else you would rather not hand to a third-party server. In1 performs the entire Markdown-to-HTML conversion locally in your browser using plain JavaScript, so your text never leaves your device. Nothing is uploaded, nothing is stored and there is no account to create. The conversion and the preview update the moment you type, with no network request, which makes the tool instant and fully functional offline. You can paste a long document and the HTML is produced immediately. When you are happy with it, a single click copies the HTML so you can paste it wherever it needs to go. This local-only approach gives you the ease of an online converter with none of the privacy trade-offs, which matters when the Markdown you are converting is unpublished, confidential, or simply yours to keep.
Who converts Markdown to HTML?
The audience is wide because Markdown is everywhere. Developers convert README files and documentation into HTML for websites, wikis and help centers. Technical writers draft in Markdown for its speed and then need HTML for the publishing platform. Bloggers and content creators write posts in Markdown and paste the resulting HTML into a CMS that expects markup. Email marketers turn Markdown into the HTML their templates require. Note-takers and students export their Markdown notes to HTML for sharing or archiving. Anyone who prefers writing in plain, readable Markdown but has to deliver HTML — which is a very common situation — benefits from a converter that is accurate, supports the GitHub-flavored features they actually use, shows a live preview so they can trust the result, and does the whole thing instantly and privately in the browser. It removes the friction between a comfortable writing format and the markup the web runs on. Support teams convert help-article drafts for their knowledge base, newsletter writers turn Markdown into the HTML their sending tool expects, and educators publish lesson notes written in Markdown to a class website. Seeing the live preview before copying means there is never a surprise when the HTML lands on the page, because the rendered result you approved in the tool is the same structure that gets pasted, which removes the usual round of fixing markup after the fact.
Higher limits, batch processing and an API are on the way. Want early access?