Markdown Editor

Online Markdown Editor with Live Preview

PlainRaw's Markdown editor renders your text into formatted HTML in real time, side-by-side with the source. No accounts, no installs — just paste, write, and preview.

Features

  • GitHub-Flavored Markdown: tables, task lists, strikethrough, autolinks, and fenced code blocks all render as you type.
  • Syntax highlighting: code blocks are highlighted by language, so technical posts and READMEs are easy to scan.
  • Embedded Mermaid diagrams: drop a ```mermaid block into any document and the diagram renders inline alongside the rest of the preview.
  • Line numbers and dark/light preview: match your editor and reading preferences without leaving the page.
  • Shareable snippets: save your draft and share a stable link. Keep the private edit link to come back and update it later.

Common use cases

Drafting GitHub READMEs and pull request descriptions, writing technical blog posts before pasting into a CMS, prototyping documentation, and previewing comments for forums or issue trackers that accept Markdown. If you also need to compare two versions of a document, switch over to the Text Diff tool.