Type Markdown on the left and see a live preview on the right. Supports GFM tables, code blocks, strikethrough, and task lists. Your draft is automatically saved in the browser so it survives a refresh, and you can download the finished document as a .md file.
Your draft is stored only in this browser's localStorage (never sent to a server) and isn't shared across devices or browsers.
Markdown is a lightweight markup language: a handful of symbols β # heading, **bold**, _italic_, `inline code`, ```code block```, > quote, - list, [text](URL) link β produce a formatted document. Nearly every dev/collaboration tool (GitHub, Notion, Slack) supports Markdown or its GFM extension. Clicking a toolbar button in this editor wraps the selected text in the matching syntax.
GFM (GitHub Flavored Markdown) extends standard Markdown with tables (| col | col |), strikethrough (~~text~~), task lists (- [ ] todo, - [x] done), and auto-linked URLs. These are common in README files and issue/PR descriptions β the Insert Table button quickly drops in a basic table template.
Converting Markdown to HTML is risky if the user mixed raw HTML into the source (e.g. <script>, <img onerror=...>) β that HTML would otherwise render (and execute) as-is. This tool runs the converted HTML through a self-implemented whitelist sanitizer before it ever reaches the preview pane, keeping only approved tags/attributes and stripping script/iframe tags, on* event attributes, and javascript: links.