Intent to Ship: Animatable zoom

Chromestatus

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May 26, 2026, 11:50:04 PMMay 26

to blin...@chromium.org, cg...@chromium.org

Contact emails

cg...@chromium.org

Specification

No information provided

Summary

The CSS zoom property is animatable and interpolates as a <number>. Developers can transition and animate zoom to smoothly scale elements and their layout, complementing existing transform-based scaling.

Blink component

Blink>CSS

Web Feature ID

zoom

Motivation

No information provided

Initial public proposal

No information provided

TAG review

No information provided

TAG review status

Not applicable

Goals for experimentation

None

Risks

Interoperability and Compatibility

No information provided

Gecko: Shipped/Shipping (https://bugzilla.mozilla.org/show_bug.cgi?id=1917602)

WebKit: Shipped/Shipping (https://bugs.webkit.org/show_bug.cgi?id=315081)

Web developers: No signals

Other signals:

WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications?

No information provided

Debuggability

No information provided

Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?

Yes

Is this feature fully tested by web-platform-tests?

Yes

Flag name on about://flags

No information provided

Finch feature name

CSSZoomAnimation

Rollout plan

Will ship enabled for all users

Requires code in //chrome?

False

Tracking bug

https://issues.chromium.org/u/2/issues/393810951

Estimated milestones

Shipping on desktop	150
Shipping on Android	150
Shipping on WebView	150

Anticipated spec changes

Open questions about a feature may be a source of future web compat or interop issues. Please list open issues (e.g. links to known github issues in the project for the feature specification) whose resolution may introduce web compat/interop risk (e.g., changing to naming or structure of the API in a non-backward-compatible way).

No information provided

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5183671737909248?gate=4725904325607424

This intent message was generated by Chrome Platform Status.

Mike Taylor

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May 27, 2026, 9:31:56 AMMay 27

to Jason Leo, blink-dev

On 5/26/26 11:49 p.m., Chromestatus wrote:

Contact emails
cg...@chromium.org

Specification
No information provided

Is there a spec link?

Summary
The CSS zoom property is animatable and interpolates as a <number>. Developers can transition and animate zoom to smoothly scale elements and their layout, complementing existing transform-based scaling.

Blink component
Blink>CSS

Web Feature ID
zoom

Motivation
No information provided

Initial public proposal
No information provided

TAG review
No information provided

I assume we don't need TAG review here, given that other engines have implemented. See https://www.chromium.org/blink/launching-features/wide-review/#exceptions. But it's helpful to state that for reviewers.

TAG review status
Not applicable

Goals for experimentation
None

Risks

Interoperability and Compatibility
No information provided

Gecko: Shipped/Shipping (https://bugzilla.mozilla.org/show_bug.cgi?id=1917602)

WebKit: Shipped/Shipping (https://bugs.webkit.org/show_bug.cgi?id=315081)

Web developers: No signals

Other signals:

WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications?
No information provided

Debuggability
No information provided

Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?
Yes

Is this feature fully tested by web-platform-tests?
Yes

Can you please link to tests?

Flag name on about://flags
No information provided

Finch feature name
CSSZoomAnimation

Rollout plan
Will ship enabled for all users

Requires code in //chrome?
False

Tracking bug
https://issues.chromium.org/u/2/issues/393810951

Estimated milestones

Shipping on desktop 150

Shipping on Android 150

Shipping on WebView 150

Anticipated spec changes

Open questions about a feature may be a source of future web compat or interop issues. Please list open issues (e.g. links to known github issues in the project for the feature specification) whose resolution may introduce web compat/interop risk (e.g., changing to naming or structure of the API in a non-backward-compatible way).
No information provided

Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5183671737909248?gate=4725904325607424

This intent message was generated by Chrome Platform Status.

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Jason Leo

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May 27, 2026, 11:32:22 AMMay 27

to blink-dev, Mike Taylor, blink-dev, Jason Leo

WPTs:
https://wpt.fyi/results/css/css-viewport/animations/zoom-interpolation.html

Is there a spec link?

Not yet, we only have a not yet merged PR https://github.com/w3c/csswg-drafts/pull/13910

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Mike Taylor

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May 28, 2026, 4:14:31 PMMay 28

to Jason Leo, blink-dev

Thanks, LGTM1

Yoav Weiss (@Shopify)

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May 28, 2026, 4:18:54 PMMay 28

to Mike Taylor, Jason Leo, blink-dev

LGTM2

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Chris Harrelson

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May 28, 2026, 4:19:34 PMMay 28

to Yoav Weiss (@Shopify), Mike Taylor, Jason Leo, blink-dev

LGTM3

To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOmohS%2Be6GLak8ScfadXjdUhbnikA5hriWj_2vT8h3a8_y8CSA%40mail.gmail.com.

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