CSS speak-as Property Reference
The CSS speak-as property is a experimental property in CSS Speech. Review its formal syntax, computed behavior, and practical declarations.
Updated 2026-08-12
speak-as overview
The CSS speak-as property is a experimental property in CSS Speech. Review its formal syntax, computed behavior, and practical declarations.
The computed value normally inherits from the parent element when no declaration wins the cascade.
Syntax and formal definition
| Field | Value |
|---|---|
| Formal syntax | normal | spell-out || digits || [ literal-punctuation | no-punctuation ] |
| Initial value | auto |
| Applies to | allElements |
| Inherited | Yes |
| Percentages | no |
| Computed value | specifiedValue |
| Animation type | discrete |
| Media | visual |
| Specification group | CSS Speech |
| Status | Experimental |
Practical examples
These declarations demonstrate valid ways to set speak-as. The initial and inherit global keywords remain available even when a property-specific value is preferable.
CSS
.reset-example {
speak-as: initial;
}
.inherit-example {
speak-as: inherit;
}
@supports (speak-as: initial) {
.supported {
speak-as: initial;
}
}