Contact emails
sejalan...@microsoft.com

Explainer
None


Specification
https://www.w3.org/TR/css-fonts-4/#font-rend-desc


Summary

As CSS allows fine control over font features using 'font-feature-settings' at 
the element level, Chromium-based browsers currently lack support for these 
properties within '@font-face' declarations. This feature supports the 
string-based syntax for font-feature-settings as defined in CSS Fonts Level 4. 
Invalid or unrecognized feature tags will be ignored per specification. No 
binary or non-standard forms are supported. As OpenType fonts become more 
widely adopted, this enhancement will improve typographic control, reduce 
redundancy, and support a more scalable, modern approach to web design.



Blink component
Blink>Fonts


TAG review
None


TAG review status
Not applicable


Risks




Interoperability and Compatibility




Gecko: Shipped/Shipping (https://bugzilla.mozilla.org/show_bug.cgi?id=1355366)

WebKit: Shipped/Shipping (https://bugs.webkit.org/show_bug.cgi?id=63618)

Web developers: Positive 
(https://stackoverflow.com/questions/27486680/how-to-set-default-font-feature-settings)
 Over 30 users have indicated that they are affected by this issue and its 
related duplicates, as noted in https://issues.chromium.org/issues/40398871 and 
https://issues.chromium.org/issues/324519293

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?

None




Debuggability

Existing DevTools capabilities already cover this.



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
https://wpt.fyi/results/css/css-fonts/font-feature-settings-descriptor-02.html?label=master&label=experimental&aligned
 
https://wpt.fyi/results/css/css-fonts?label=master&label=experimental&aligned&q=font-feature-settings-descriptor-binary.html



Flag name on about://flags



Finch feature name
FontFeatureSettingsDescriptor


Rollout plan
Will ship enabled for all users


Requires code in //chrome?
False


Tracking bug
https://issues.chromium.org/issues/40398871


Estimated milestones


Shipping on desktop 139

Shipping on Android 139

Shipping on WebView 139

Shipping on iOS 139




Anticipated spec changes

Open questions about a feature may be a source of future web compat or interop 
issues. Please list open issues (eg links to known github issues in the project 
for the feature specification) whose resolution may introduce web 
compat/interop risk (eg, changing to naming or structure of the API in a 
non-backward-compatible way).
None


Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5102801981800448?gate=5197421990379520


This intent message was generated by Chrome Platform Status.

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