Ruby annotation

- LS

Method of adding pronunciation or other annotations using ruby elements (primarily used in East Asian typography).

IE

  1. 5.5 - 10: Partial support
  2. 11: Partial support

Edge

  1. 12 - 79: Partial support
  2. 80: Partial support

Firefox

  1. 2 - 37: Not supported (but has polyfill available)
  2. 38 - 72: Supported
  3. 73: Supported
  4. 74 - 75: Supported

Chrome

  1. 4: Not supported (but has polyfill available)
  2. 5 - 79: Partial support
  3. 80: Partial support
  4. 81 - 83: Partial support

Safari

  1. 3.1 - 4: Not supported (but has polyfill available)
  2. 5 - 12.1: Partial support
  3. 13: Partial support
  4. TP: Partial support

Opera

  1. 9 - 12.1: Not supported (but has polyfill available)
  2. 15 - 65: Partial support
  3. 66: Partial support

iOS Safari

  1. 3.2 - 4.3: Not supported (but has polyfill available)
  2. 5 - 13.1: Partial support
  3. 13.2: Partial support
  4. 13.3: Partial support

Opera Mini

  1. all: Not supported (but has polyfill available)

Android Browser

  1. 2.1 - 2.3: Not supported (but has polyfill available)
  2. 3 - 4.4.4: Partial support
  3. 80: Partial support

Blackberry Browser

  1. 7: Not supported (but has polyfill available)
  2. 10: Partial support

Opera Mobile

  1. 10 - 12.1: Not supported (but has polyfill available)
  2. 46: Partial support

Chrome for Android

  1. 80: Partial support

Firefox for Android

  1. 68: Supported

IE Mobile

  1. 10: Partial support
  2. 11: Partial support

UC Browser for Android

  1. 12.12: Partial support

Samsung Internet

  1. 4 - 9.2: Partial support
  2. 10.1: Partial support

QQ Browser

  1. 1.2: Partial support

Baidu Browser

  1. 7.12: Partial support

KaiOS Browser

  1. 2.5: Supported

Browsers without native support can still simulate support using CSS. Partial support refers to only supporting basic ruby, may still be missing writing-mode, Complex ruby and CSS3 Ruby.

Resources:
HTML5 Doctor article
Add-on "XHTML Ruby Support" for Firefox
Addon "HTML Ruby" for Firefox support
CSS specification
WebPlatform Docs