coderef

interpolate-sizeLimited availability

The interpolate-size CSS property sets whether animations and transitions interpolate between a numeric value and a keyword value, such as from a fixed length to auto or fit-content.

Not yet supported in all major browsers — check the table and provide a fallback.

How to use ↓Compare browsers

Browser support

DesktopChrome
1–128Not supported
129+Supportedsince Sep 17, 2024
Current: 155
Edge
12–128Not supported
129+Supportedsince Sep 19, 2024
Current: 154
Firefox
✕Not supportedup to 157
Current: 157
Safari
✕Not supportedup to 27
Current: 27
MobileChrome Android
18–128Not supported
129+Supportedsince Sep 17, 2024
Current: 155
Firefox Android
✕Not supportedup to 157
Current: 157
Safari iOS
✕Not supportedup to 27
Current: 27

How to use

Not supported in Firefox, Safari, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.

Example

Full syntax and examples are on MDN: interpolate-size.

Feature detection

CSS · check before using
@supports (interpolate-size: initial) {
  /* styles that rely on interpolate-size */
}

/* or in JavaScript */
if (CSS.supports("interpolate-size", "initial")) {
  // use it
}

Documentation (MDN)

Specification

Sub-features

Support for each part of the feature (3). The overall table above shows when the whole feature works.

Sub-featureChromeEdgeFirefoxSafariChrome AndroidFirefox AndroidSafari iOS
interpolate-size129129✕✕129✕✕
interpolate-size.allow-keywords129129✕✕129✕✕
interpolate-size.numeric-only129129✕✕129✕✕