Markdown HTML Converter

Fast, accurate and free online markdown html converter tool running directly in your browser.

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Client-Side Processing

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Instructions

1

Enter data
Enter content, paste text or load a file from disk.
2

Click the button
The tool will immediately process your data in the browser.
3

Get the result
Copy the finished text or save the file to your device.

                                                function runTool() {

                                                  return "Result ready in 0.1s";

                                                }

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Input data

359 characters

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Result

mode: safe open new: 1 input len: 359

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Markdown to HTML converter – online with live preview

Markdown is a lightweight markup language that allows you to format text with simple symbols (* for bold, # for headings). The tool converts Markdown to HTML with live preview and supports CommonMark and GitHub Flavored Markdown (GFM).

Markdown HTML converter markdown to html online markdown preview GFM GitHub Markdown

Markdown syntax - basics

Headers: # H1, ## H2, ### H3. **Bold** or __bold__. *Italics* or _italics_. ~~Strikethrough~~. [Link](URL). ![Image](URL "alt"). Unordered list: - or * or +. Numbered: 1. 2. 3. Inline code: `code`. Code block: 3× backtick. > Quote. --- Horizontal line.

GitHub Flavored Markdown (GFM)

Tables: | Column | | --- | | Value |. Checkboxes: - [x] done, - [ ] to do. Strikethrough: ~~text~~. Autolink: https:// automatically links. Syntax highlighting: ```javascript code ```. @mentions and #issues (on GitHub). Task lists: interactive checkboxes. Emoji: :smile: :rocket:.

Markdown in various applications

GitHub/GitLab: README.md, wiki. Notion: Native Markdown. Obsidian: Markdown first note-taking. Jekyll/Hugo: static site generators (Markdown → HTML). VS Code: Markdown preview built-in. Discord: partial Markdown (bold, italic, code, spoiler). Reddit: similar but own syntax. Mattermost/Rocket.Chat: Full Markdown.

CommonMark vs GFM vs MultiMarkdown

CommonMark: Standardizing Basic Markdown (2014). spec.commonmark.org. Dingus: live parser. GFM: GitHub extension (tables, checkboxes, strikethrough). MultiMarkdown: extended (tables, footnotes, metadata). Pandoc: universal converter (md, rst, docx, PDF). Each system may interpret Markdown slightly differently.

FAQ

How to convert Markdown to HTML in Node.js?

npm install marked. const { marked } = require("marked"); const html = marked.parse("# Hello\n**bold**"). Alternatives: remark (unist/mdast), markdown-it (faster), showdown. XSS protection: marked.setOptions({ sanitize: true }) or use DOMPurify on output.

How to convert Markdown to HTML in Python?

pip install markdown. importmarkdown; html = markdown.markdown(text). Extensions: markdown.markdown(text, extensions=["tables","fenced_code","toc"]). Mistune: a faster library. Pandoc: subprocess call to pandoc CLI (convert to PDF, docx too). Jekkyll/MkDocs: automatic conversion on build.

How to edit Markdown with preview?

VS Code: built-in Ctrl+Shift+V (preview below). Typora: WYSIWYG Markdown editor. Obsidian: notebook with live preview. HackMD/HedgeDoc: Online Collaborative. Notion: Markdown import. Dillinger.io: online. StackEdit.io: online, sync with Google Drive.

What is front matter in Markdown?

YAML front matter: metadata at the beginning of the Markdown file. --- \n title: "Title" \n date: 2024-01-01 \n --- Used in: Jekyll, Hugo, Gatsby, Astro, Obsidian. Contains: title, author, date, tags, categories, featured_image. Libraries: gray-matter (npm) parses front matter.

How to handle math in Markdown?

LaTeX math: $formula$ (inline) and $$formula$$ (block). KaTeX: a lightweight, fast math renderer. MathJax: full LaTeX support, heavy. GitHub: supports $...$ and $$...$$ as of 2022. Obsidian: built-in MathJax. Jupyter Notebooks: Full LaTeX.

Related tools: HTML formatting, HTML to text converter and Markdown validator.

HTML to Markdown Converter