hugo/docs/content/en/_common/content-format-table.md

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Do not remove front matter.

Content format	Media type	Identifier	File extensions
Markdown	text/markdown	markdown	markdown,md, mdown
HTML	text/html	html	htm, html
Emacs Org Mode	text/org	org	org
AsciiDoc	text/asciidoc	asciidoc	ad, adoc, asciidoc
Pandoc	text/pandoc	pandoc	pandoc, pdc
reStructuredText	text/rst	rst	rst