What Markdown is
Markdown is a lightweight markup language that John Gruber designed in 2004 so people could write formatted text using nothing but ordinary keyboard characters. Instead of clicking buttons or typing full HTML tags, you mark a heading with a hash, bold with asterisks, and a list with dashes. The text stays readable on its own, and it turns into clean HTML whenever you need it.
This tool takes your Markdown and produces the matching HTML instantly, with a live preview on the right. Everything happens inside your browser: your text is never sent to a server.
How to use the converter
- Type or paste your Markdown into the box on the left.
- Watch the generated HTML and the preview update as you type.
- Hit Copy HTML to drop the code into your blog, CMS, or email.
Load the built-in example to see every supported element at a glance, then edit it however you like.
Basic syntax
The beauty of Markdown is that you can learn it in five minutes. Here is the syntax the converter understands:
| Element | Markdown syntax |
|---|---|
| Headings | # H1, ## H2, ### H3 |
| Bold | **bold text** |
| Italic | *italic text* |
| Link | [visible text](https://example.com) |
| Bulleted list | - first point |
| Numbered list | 1. first step |
| Quote | > quoted text |
| Inline code | wrap the text in backticks |
| Code block | three backticks before and after |
| Horizontal rule | --- |
Worked example
If you write this Markdown:
## Notes
- Milk
- Breadthe converter returns exactly this HTML:
<h2>Notes</h2>
<ul><li>Milk</li><li>Bread</li></ul>The preview shows it already rendered: the heading in a larger size and the list with its bullets.
What it is good for
- README files: GitHub, GitLab, and npm render Markdown natively, so it is the default way to document software projects.
- Blogs and notes: many content managers and apps such as Obsidian, Notion, or Ghost use Markdown so you can write without fighting a formatting toolbar.
- Emails and forums: converting to HTML lets you paste formatted content where only HTML is accepted.
Frequently asked questions
What exactly is Markdown?
It is a convention for formatting plain text with simple symbols. A Markdown document is readable as it stands, yet any converter (like this one) turns it into valid web HTML. Its popularity comes from separating content and formatting without cluttering the text with hard-to-read tags.
How do I write links and images?
A link uses square brackets and parentheses: the visible text in brackets and the address in parentheses, for example [my site](https://example.com). An image uses the same shape with an exclamation mark in front: . This basic converter renders links; image support is not part of this version, though the syntax is the one shown above.
Is it safe to paste text or HTML here?
Yes. Before it generates anything, the tool escapes the special HTML characters (&, <, and >), so if you paste something like <script>, it appears as literal text and never runs. The preview only renders the HTML produced by the converter itself, never your raw text. On top of that, all the work is local: nothing leaves your device.
Is the generated HTML valid?
Yes. The converter outputs standard tags (h1 through h6, p, ul, ol, blockquote, pre, code, a, strong, and em) that every browser understands. For very complex documents with nested tables or embedded HTML you may want a full processor, but for READMEs, notes, and blog posts the result is clean and ready to use.