About the Markdown Previewer
Markdown is the standard lightweight markup language for README files, documentation, comments on GitHub/GitLab, and countless static site generators — but it's not always obvious how a given snippet will actually render.
This tool renders Markdown to HTML live as you type, so you can preview headings, lists, links, code blocks, and formatting exactly as they'll appear before committing them somewhere.
How it works
- Type or paste Markdown into the editor pane.
- The rendered HTML preview updates instantly on the right as you type.
- Copy your finished Markdown into your README, pull request description, or CMS.
Common use cases
- Drafting a README: Previewing how headings, badges, and code blocks will look before committing a `README.md` to a repository.
- Writing a pull request description: Checking that a bulleted list or a linked issue reference renders correctly before submitting.
- Learning Markdown syntax: Experimenting with syntax like tables, nested lists, or fenced code blocks to see the exact HTML output.
Frequently asked questions
Which Markdown flavor does this use?
It uses the widely-supported CommonMark-based `marked` parser, covering standard Markdown syntax — headings, lists, links, images, code blocks, and emphasis. Some platform-specific extensions (like GitHub's task lists or @mentions) may render differently on the actual platform.
Is the rendered HTML safe if I paste in untrusted Markdown?
The preview is sanitized with DOMPurify before rendering, which strips dangerous elements like inline `<script>` tags, so previewing untrusted Markdown in this tool won't execute arbitrary code in your browser.
Does it support tables?
Yes — standard pipe-delimited Markdown tables render correctly in the preview.
Can I export the rendered HTML?
The tool shows a live preview; to reuse the generated HTML elsewhere, you can copy it directly from your browser's inspector, though the tool itself is focused on visual preview rather than HTML export.
This tool runs entirely in your browser — nothing you enter is sent to a server. Read more in the Privacy Policy, or browse the full list of tools.