<ruby>: The Ruby Annotation element
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The<ruby>HTML element represents small annotations that are rendered above, below, or next to base text, usually used for showing the pronunciation of East Asian characters. It can also be used for annotating other kinds of text, but this usage is less common.
The termruby originated asa unit of measurement used by typesetters, representing the smallest size that text can be printed on newsprint while remaining legible.
Try it
<ruby> 明日 <rp>(</rp><rt>Ashita</rt><rp>)</rp> </ruby>ruby { font-size: 2em;}Attributes
This element only includes theglobal attributes.
Examples
Example 1: Character
html
<ruby> 漢 <rp>(</rp><rt>Kan</rt><rp>)</rp> 字 <rp>(</rp><rt>ji</rt><rp>)</rp></ruby>Result
Example 2: Word
html
<ruby> 明日 <rp>(</rp><rt>Ashita</rt><rp>)</rp> </ruby>Result
Technical summary
| Content categories | Flow content,phrasing content, palpable content. |
|---|---|
| Permitted content | Phrasing content. |
| Tag omission | None, both the starting and ending tag are mandatory. |
| Permitted parents | Any element that acceptsphrasing content. |
| Implicit ARIA role | No corresponding role |
| Permitted ARIA roles | Any |
| DOM interface | HTMLElement |
Specifications
| Specification |
|---|
| HTML # the-ruby-element |
Browser compatibility
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See also
<rt><rp>ruby-overhangtext-transform: full-size-kana