Free Online Markdown Editor - Convert Markdown To HTML

Markdown is a lightweight markup language that lets you format text using plain, readable syntax. It was created by John Gruber in 2004 with the goal of making web writing as easy as writing an email. Instead of clicking toolbar buttons, you simply type symbols like # for headings, * for bold, or - for lists. Markdown files are portable, future-proof, and supported everywhere — from GitHub and Reddit to WordPress and Slack. Whether you are a developer writing documentation, a blogger drafting posts, or a student taking notes, Markdown saves time and keeps your focus on the content, not the formatting.

Absolutely. Many AI assistants — including ChatGPT, Claude, Gemini, Perplexity, DeepSeek, and GitHub Copilot — can generate Markdown-formatted responses. Simply copy the Markdown output from your preferred AI tool and paste it directly into the editor on the left. You will see an instant live preview of the formatted content on the right. From there, you can refine the Markdown, copy the generated HTML to your clipboard, or download it as a complete HTML file. This makes AI-generated content ready for publishing in seconds — no manual reformatting needed.

Yes, absolutely. This online Markdown editor is completely free to use with no sign-ups, no hidden fees, and no usage limits. You can write, preview, copy, and download as much as you need. We believe great tools should be accessible to everyone, which is why there are no premium tiers or paywalls — just a clean, fast, and reliable Markdown editing experience right in your browser.

No. Your content never leaves your browser. Everything you write stays local — it is saved automatically in your browser's local storage so it persists if you refresh or accidentally close the tab. But we never send, store, or process your Markdown on any server. Your privacy and data security are built into the design of this tool.

Yes, that is exactly what this tool does. As you type Markdown on the left, the right panel instantly renders a live HTML preview. You can switch between the visual Preview and the raw HTML code view using the buttons above the preview panel. Copy the generated HTML to your clipboard, or download it as a .html file. You can also toggle "Full Page Mode" to include a complete HTML5 document structure with DOCTYPE, head, meta tags, and body wrapper — perfect for publishing directly to the web.

Preview mode shows your Markdown rendered as a formatted webpage — exactly how it would look when published. HTML mode shows the underlying HTML code that the Markdown generates. Use Preview to check your formatting and layout, then switch to HTML mode to inspect or copy the clean HTML output. Both views update live as you type.

This editor supports standard Markdown plus many extended features including headings (H1 through H6), bold and italic text, strikethrough, ordered and unordered lists with nesting, task lists with checkboxes, code blocks with syntax highlighting, inline code, tables with alignment, blockquotes with nesting, horizontal rules, links with titles, images with alt text, and escape characters. It is powered by the marked.js library, one of the most popular and compliant Markdown parsers available.

Yes. You can download your Markdown source as a .md file using the download button in the editor toolbar. You can also download the generated HTML as a .html file using the download button next to the preview panel. Both options prompt you for a filename before saving, giving you full control over your exports.

Click the "?" button in the editor toolbar to open the Markdown Cheat Sheet. It lists all common syntax elements with examples. Click any row in the cheat sheet and the syntax will be inserted directly at your cursor position in the editor — no typing required. This makes it easy for beginners to learn Markdown while being productive from the very first use.

Yes. The editor is built with a responsive layout that adapts to different screen sizes. On larger screens you get a side-by-side editing and preview experience. On smaller screens the layout adjusts to stack vertically for comfortable mobile editing. CodeMirror, the code editor component, handles touch input and on-screen keyboards smoothly.

This Markdown editor works on all modern browsers including Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge, and Opera. It uses standard web technologies (CodeMirror for editing, marked.js for parsing) that are compatible with any browser that supports ES6 JavaScript and HTML5.