On this page, you’ll learn:

  • How to make text bold in AsciiDoc.

  • Where to modify your site’s bold text styling.

Text that is marked up as bold will stand out against the regular, surrounding text due to the application of a thicker and/or darker font. Bold is useful when the text needs to catch the attention of a site visitor quickly scanning a page.

Bold syntax

A word or phrase is marked as bold when it’s enclosed in a single set of asterisks (e.g., *word*) (constrained formatting). Bounded characters are marked as bold when they’re enclosed in a set of double asterisks (e.g., char**act**ers) (unconstrained formatting).

Bounded characters are characters that are:

  • directly preceded by a non-whitespace character, or

  • directly followed by a non-whitespace character.

Bold inline formatting
A bold *word*, and a bold *phrase of text*.

Bold c**hara**cter**s** within a word.

You don’t need to use double asterisks when an entire word or phrase marked as bold is directly followed by a common punctuation mark, such as ;, ", and !.


A bold word, and a bold phrase of text.

Bold characters within a word.

Mixing bold with other formatting

You can add multiple emphasis styles to bold text as long as the syntax is placed in the correct order.

Order of inline formatting syntax
`*_monospace bold italic phrase_*` & ``**__char__**``acter``**__s__**``

Monospace syntax (`) must be the outermost formatting set (i.e., outside the bold formatting set). Italic syntax (_) is always the innermost formatting set.


monospace bold italic phrase & characters

Site styles

How bold text appears on your site depends on the fonts loaded by your UI and any CSS styles applied to the <strong> HTML tag. You can learn more about customizing how bold text appears in your site in the UI documentation.

Asciidoctor resources