showdown/docs/spec-compliance.md

Spec Compliance

Commonmark

Compliance percentage:

How to enable commonmark flavor

Enable Commonmark flavor

let converter = new showdown.Converter();
converter.setFlavor('commonmark');

Known differences:

ATX Headings

• Showdown doesn't support empty headings

  Input:

  # 
  

  Showdown Output:

  <p>#</p>
  

  Commonmark output:

  <h1></h1>