OpenToolkit

Markdown Editor

Developer

Write Markdown with an instant, sanitized HTML preview.

Open Markdown Editor →

How to use

  1. Type Markdown in the left pane, or upload a local Markdown or text file.
  2. Watch the rendered output update live on the right.
  3. Click “Copy HTML” or “Download .html” to export.

Features

  • GitHub-flavored Markdown: tables, code blocks, lists
  • Live preview, sanitized with DOMPurify
  • Word and character counts
  • Export to standalone HTML
🔒 Private by design — Markdown Editor runs entirely in your browser. Your files and text never leave your device.