Adds the ability to embed CSS style sheets within the STYLE block of a WebVTT file. This feature is supported by several other web browsers and video players including Safari and VLC but not Chrome.


To ensure a consistent experience across platforms, Chrome should conform to the WebVTT specification by supporting inline styling. This project is part of a larger effort to improve Accessibility around the Media Experience in Chrome.



Specification link

Specification being incubated in a Community Group

Status in Chromium


In development (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • No signal
  • Shipped/Shipping
  • Strongly positive


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Last updated on 2022-01-21