Markdown to HTML Converter
Convert Markdown to HTML online free with a live preview. Paste any Markdown and copy clean HTML output for websites, CMS platforms, or apps. No install.
How to Use Markdown to HTML Converter
- 1Type or paste your Markdown text into the editor panel.
- 2The rendered HTML preview updates in real time on the right.
- 3Click View HTML Source to switch to the raw HTML output.
- 4Click Copy HTML to copy the generated markup to your clipboard.
- 5Use Download HTML to save the output as a .html file.
About Markdown to HTML Converter
This Markdown to HTML converter online free renders your Markdown in real time, side by side with the raw HTML output. Paste any Markdown — headings, bold, italic, code blocks, tables, blockquotes, links, and lists — and the HTML appears instantly in the right panel.
Want to preview markdown as HTML before pasting into a CMS? Click the Preview tab to see the fully rendered output exactly as it will look in a browser. Click View HTML Source to see the clean HTML code ready to copy.
This is the right tool when you want to convert markdown with no install: no Node.js, no plugins, no extensions. Everything runs in your browser. Useful for converting .md files for Ghost, WordPress, Contentful, or any platform that accepts HTML but not raw Markdown.
Also works as a GitHub Markdown to HTML converter — paste README.md content or GitHub-flavoured Markdown with tables and fenced code blocks and get standards-compliant HTML output.
How Markdown to HTML Converter Works
The Markdown to HTML Converter parses your Markdown-formatted text and outputs valid HTML in real time. It supports the CommonMark specification — the standardised Markdown dialect used by GitHub, GitLab, Discourse, and most modern documentation platforms. The parser handles headings (# through ######), bold (**text**), italic (*text*), inline code (`code`), fenced code blocks with syntax highlighting, blockquotes, ordered and unordered lists (including nested lists), links, images, horizontal rules, tables (GitHub-Flavoured Markdown extension), and strikethrough text. The rendered HTML preview is shown side-by-side with the raw HTML output, and both can be copied with one click.
Who Uses This Tool and Why
- ✓Developers writing README files, documentation, and wikis use the converter to preview how their Markdown will render in HTML before committing it to a repository.
- ✓Bloggers and content creators draft posts in Markdown for its clean syntax, then convert Markdown to HTML for pasting into CMS platforms that accept raw HTML input.
- ✓Technical writers convert Markdown documentation to HTML fragments for embedding in web portals, intranets, and knowledge-base tools that render HTML natively.
- ✓Students and academics writing in Markdown for portability use the converter to produce HTML versions for submission to platforms that do not support Markdown.
- ✓Email developers who write email templates convert Markdown content blocks to inline HTML for rapid prototyping before applying full email-compatible CSS styling.
Limitations & Practical Tips
Known Limitations
- •The converter outputs HTML fragments, not complete HTML documents. You will need to wrap the output in a full HTML shell with <!DOCTYPE html>, <head>, and <body> tags for a standalone page.
- •Raw HTML embedded in Markdown is passed through as-is per the CommonMark spec. If the source contains untrusted content, sanitise the HTML output before rendering it in a browser.
- •Custom Markdown extensions (e.g. Obsidian wikilinks, Mermaid diagrams, LaTeX math) are not supported by this converter.
Tips for Best Results
- →Use fenced code blocks (triple backtick + language name) for syntax-highlighted code snippets — this produces <pre><code class="language-js"> output that most syntax highlighters target.
- →For tables, make sure columns are separated by pipes (|) and the second row is a separator row (| --- | --- |) — this is the GFM table syntax required for correct rendering.
- →After converting, validate the HTML output with the W3C Markup Validator if you plan to embed it in a production page to catch any unclosed tags.
Frequently Asked Questions
- What is Markdown and why is it used?
Markdown is a lightweight markup language created by John Gruber in 2004. It uses plain-text symbols (e.g. # for headings, ** for bold) to represent formatting, making it easy to write without HTML tags. It is widely used for README files, documentation, blogs, and content management systems.
- What Markdown syntax is supported?
The converter supports headings (# through ######), bold (**text**), italic (*text*), strikethrough (~~text~~), inline code (`code`), fenced code blocks (```), unordered lists (- item), blockquotes (> text), horizontal rules (---), links ([text](url)), and images ().
- What is the difference between CommonMark and GitHub Flavored Markdown?
CommonMark is a standardised Markdown specification. GitHub Flavored Markdown (GFM) extends CommonMark with tables, task lists, strikethrough, and auto-linked URLs. This converter implements core CommonMark plus GFM strikethrough. For full GFM including tables, consider a dedicated library like marked or remark.
- Can I use the output HTML directly in a webpage?
Yes, the HTML output is valid, semantic HTML that can be pasted into any webpage. For styling, wrap the output in a container with CSS classes or use a typography framework like Tailwind CSS prose classes or GitHub's markdown CSS stylesheet.
- Is Markdown case-sensitive?
Yes. # must be lowercase and at the start of a line. **Bold** requires matching asterisks. Link syntax [text](url) is case-sensitive for the URL. Heading levels use exactly 1–6 hash symbols with a space after them.
- How do I add a table in Markdown?
GFM table syntax uses | as column separators with a header row and a separator row: | Header | Header | \n | --- | --- | \n | Cell | Cell |. This converter's built-in parser does not yet support tables — for table support, use the marked JavaScript library.
- Where is Markdown used in practice?
GitHub (README files, issues, pull requests), GitLab, Bitbucket, Stack Overflow, Reddit, Discord, Notion, Obsidian, Ghost CMS, Jekyll/Hugo/Gatsby static site generators, Jupyter notebooks, and most modern documentation platforms all support Markdown natively.
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Last updated: May 2, 2026 — Markdown to HTML Converter by CalcDash.