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CSS 'ic' Length Unit

Category

CSS

Type

Chromium catches up

Status

Enabled by default (Chrome 106)

Intent stage

Shipped

• Breaking change: No
• Enterprise impact: None
• Chromium flag: #enable-experimental-web-platform-features
• Spec maturity: Working draft
• Web Platform Tests: No

WPT details: https://wpt.fyi/results/css/css-values/ic-unit-001.html https://wpt.fyi/results/css/css-values/ic-unit-002.html https://wpt.fyi/results/css/css-values/ic-unit-003.html https://wpt.fyi/results/css/css-values/ic-unit-004.html https://wpt.fyi/results/css/css-values/ic-unit-008.html https://wpt.fyi/results/css/css-values/ic-unit-009.html https://wpt.fyi/results/css/css-values/ic-unit-010.html https://wpt.fyi/results/css/css-values/ic-unit-011.html https://wpt.fyi/results/css/css-values/ic-unit-012.html https://wpt.fyi/results/css/css-values/ic-unit-013.html https://wpt.fyi/results/css/css-values/ic-unit-014.html

Summary

Support for expressing CSS lengths relative to the used advance measure of the CJK water ideograph.

Motivation

Allow authors to size elements to fit a given number of fullwidth glyphs for CJK fonts. Note: both Gecko and WebKit ships this unit and this feature is part of the Interop 2022 effort.

Standards & signals

• Specification: https://www.w3.org/TR/css-values-4/#ic
• Firefox: Shipped/Shipping
• Safari: Shipped/Shipping
• Web developers: No signals
• Tracking bug: https://crbug.com/937101

Ecosystem

• Web Platform Tests: https://wpt.fyi/results/?q=css%2Fcss-values%2Fic-unit-001
• 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+CSS%20'ic'%20Length%20Unit
• MDN Web Docs: https://developer.mozilla.org/en-US/search?q=CSS%20'ic'%20Length%20Unit
• Baseline status: https://webstatus.dev/?q=CSS%20'ic'%20Length%20Unit

View on chromestatus.com