Write and preview Markdown in real time. Copy as HTML instantly.
Write Markdown on the left, see the live HTML preview on the right. Export rendered HTML when ready.
A lightweight plain-text formatting syntax that converts to HTML. Created by John Gruber in 2004 and now standard across GitHub, Reddit, Discord, and most modern documentation tooling.
Markdown is the source — short syntax like **bold** or # Heading. HTML is the output — <strong>bold</strong> or <h1>Heading</h1>. Markdown is easier to write; HTML is what browsers render.
On most modern ones — GitHub, GitLab, Notion, Obsidian, Discord, Reddit, Slack, Trello. Some platforms use slight dialect variations (GFM, CommonMark, MultiMarkdown) but the basics are universal.
Use  — for example . For local images, use a relative path; for web images, use the full URL.
**bold**, *italic*, # Heading, - bullet, 1. numbered, [link](url), , `inline code`, ```code block```, > blockquote, and --- for horizontal rule. Master those ten and you cover 95% of everyday writing.
Markdown is the lingua franca of modern writing for developers, technical writers, and anyone who maintains documentation. The ConvertDox Markdown Editor gives you a split-pane editor with live HTML preview, which is the fastest way to learn the syntax and to catch formatting mistakes before publishing. The editor supports the CommonMark specification — the standardized version of Markdown — plus the GitHub-Flavored Markdown extensions for tables, task lists, strikethrough, and fenced code blocks. Everything runs in your browser, so drafts are private and the editor works offline once the page is cached. You can paste an entire long-form article, restructure headings, and export clean HTML in seconds without ever opening Word or Google Docs. For developers, this is the simplest way to author a README.md or polish a long issue write-up; for writers, it's a distraction-free environment with no formatting toolbar, no autosave anxiety, and no AI summarisation getting in the way. The output is plain HTML that pastes into any CMS, any email client, and any documentation tool. If you live in Markdown already, this editor is a reliable scratch pad; if you're learning Markdown, the live preview shortens the feedback loop significantly. Pair it with our Markdown Cheatsheet for a quick syntax reference.