CommonMark

The CommonMark flavor produces round-trip-faithful CommonMark: soft line breaks are preserved, markup-significant characters are escaped, and line-start markers are escaped so literal text is not reinterpreted.

var config = new Config { Flavor = MarkdownFlavor.CommonMark };
var converter = new Converter(config);

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The legacy CommonMark = true switch is an obsolete alias of Flavor = MarkdownFlavor.CommonMark.

Options

These options apply when the CommonMark flavor is selected:

• CommonMarkUseHtmlInlineTags (default true) - emit HTML for inline tags (em/strong/a/img) to avoid delimiter edge cases.
• CommonMarkIntrawordEmphasisSpacing (default false) - insert spaces to avoid intraword emphasis, so he<strong>ll</strong>o becomes he **ll** o.

var config = new Config
{
    Flavor = MarkdownFlavor.CommonMark,
    CommonMarkIntrawordEmphasisSpacing = true,
    CommonMarkUseHtmlInlineTags = false,
};

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Fidelity

The CommonMark flavor round-trips all 651 examples in the CommonMark spec (HTML → Markdown → HTML) against canonical cmark-gfm.