Linear easing function

Category: Miscellaneous
Type: Chromium catches up
Status: Enabled by default (Chrome 113)
Intent stage: Prepare to ship

Breaking change: No
Enterprise impact: None
Chromium flag: CSSLinearTimingFunction
Spec maturity: Working draft
Web Platform Tests: Yes

WPT details: wpt.fyi/css/css-easing/linear-timing-functions-syntax.tentative.html wpt.fyi/css/css-transitions/parsing/transition-timing-function-valid.html

Summary

Introduces linear() easing function that allows linear interpolation between a number of points. It makes it possible to approximate complex functions by linear interpolation.

Standards & signals

Specification: https://w3c.github.io/csswg-drafts/css-easing/#the-linear-easing-function
Firefox: Shipped/Shipping
Safari: Support
Web developers: No signals
Tracking bug: https://bugs.chromium.org/p/chromium/issues/detail?id=1416540

Ecosystem

Web Platform Tests: https://wpt.fyi/results/?q=css%2Fcss-easing
Chrome Platform Showcase: https://chrome-platform-showcase.paulkinlan-ea.deno.net/features
GenDN reference: https://gendn.paulkinlan-ea.deno.net/features
chrome.dev demos search: https://www.google.com/search?q=site%3Achrome.dev+Linear%20easing%20function
MDN Web Docs: https://developer.mozilla.org/en-US/search?q=Linear%20easing%20function
Baseline status: https://webstatus.dev/?q=Linear%20easing%20function

View on chromestatus.com