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Using ruby HTML Tag

Reading time 1 min
Published Jun 29, 2017
Updated Sep 11, 2019

ruby HTML: Main Tips

  • <ruby> tag represents ruby annotations for East Asian characters.
  • It is used to convey the right pronunciation, as some characters have multiple options.
  • HTML ruby tag was introduced in HTML5 and supports all global attributes.
  • You cannot omit the ending tag.

Providing Ruby Annotations

HTML ruby tags are used to provide the information on how to pronounce Japanese, Chinese, and Korean characters:

Example
<ruby>攻殻
  <rp></rp>
  <rt>こrうかく</rt>
  <rp></rp>
  機動隊
  <rp></rp>
  <rt>きsどうたtい</rt>
  <rp></rp>
</ruby>

As you can see in the example above, there are a few elements used for HTML ruby annotations:

  • <ruby> defines a connection between the base text and the ruby HTML text.
  • <rt> specifies the ruby HTML text element, which may contain inline elements.
  • <rp> surrounds the ruby parentheses for the browsers that do not support ruby HTML text.

Note: the level of support for ruby annotations differs greatly between browsers and their versions: you can check it here.

Browser Support

Browser image
Chrome
5+
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Edge
All
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Firefox
38+
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IE
5+
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Opera
15+
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Safari
5+

Mobile Browser Support

Browser image
Chrome
All
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Firefox
38+
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Opera
14+
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Safari
All