text-autospaceLimited availability
The text-autospace CSS property sets whether and how to insert spaces in inter-script text (such as when mixing Latin and Chinese characters) and around punctuation.
Not yet supported in all major browsers — check the table and provide a fallback.
Browser support
DesktopChrome
✕Not supportedup to 155
Current: 155Edge
✕Not supportedup to 154
Current: 154Firefox
1–144Not supported
145+Supportedsince Nov 11, 2025
Current: 157Safari
1–26.6Not supported
27+Supportedsince Sep 14, 2026
Current: 27MobileChrome Android
✕Not supportedup to 155
Current: 155Firefox Android
4–144Not supported
145+Supportedsince Nov 11, 2025
Current: 157Safari iOS
1–26.6Not supported
27+Supportedsince Sep 14, 2026
Current: 27How to use
Not supported in Chrome, Edge, Chrome Android. Use feature detection below and provide a fallback (or a polyfill) for those browsers.
Example
Full syntax and examples are on MDN: text-autospace.
Feature detection
CSS · check before using
@supports (text-autospace: initial) {
/* styles that rely on text-autospace */
}
/* or in JavaScript */
if (CSS.supports("text-autospace", "initial")) {
// use it
}Documentation (MDN)
Specification
Sub-features
Support for each part of the feature (7). The overall table above shows when the whole feature works.
| Sub-feature | Chrome | Edge | Firefox | Safari | Chrome Android | Firefox Android | Safari iOS |
|---|---|---|---|---|---|---|---|
| text-autospace | 140 | 140 | 145 | 18.4 | 140 | 145 | 18.4 |
| text-autospace.auto | ✕ | ✕ | 145 | 18.4 | ✕ | 145 | 18.4 |
| text-autospace.ideograph-alpha | ✕ | ✕ | 145 | 18.4 | ✕ | 145 | 18.4 |
| text-autospace.ideograph-numeric | ✕ | ✕ | 145 | 18.4 | ✕ | 145 | 18.4 |
| text-autospace.insert | ✕ | ✕ | 145 | 27 | ✕ | 145 | 27 |
| text-autospace.no-autospace | 140 | 140 | 145 | 18.4 | 140 | 145 | 18.4 |
| text-autospace.normal | 140 | 140 | 145 | 18.4 | 140 | 145 | 18.4 |