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• Showdown's markdown Syntax
• Known Differences in Output
• Showdown Options
• CLI Tool
• Markdown's XSS Vulnerability (and how to mitigate it)
• Extensions
• Emoji list
• Contributing
• Tutorials
  • Markdown editor using Showdown
• Cookbook
  • Using language and output extensions together
  • Adding default classes for HTML elements using an extension

• GoogleCloudPlatform
• Ghost
• Meteor
• Stackexchange - forked as PageDown
• docular
• and some others...
• You? Let us know, open an issue!

• twitter
• prettify

• showdown-icon
  Glyphicon and font-awesome support in Markdown for Showdown.js
• showdown-xss-filter
  Showdown.js extension to filter XSS, using leizongmin/js-xss
• showdown-toc
  Table of Contents extension for showdown.js
• showdown-footnotes
  Simply footnotes for Showdown.js
• katex-latex
  Showdown extension to display math using KaTeX and LaTeX or AsciiMath

If you have a showdown extension you would like to add here, you can raise an issue to let us know.