LGTM3
On 9/28/26 4:48 p.m., 'Dan Clark' via blink-dev wrote:
LGTM2
On Monday, September 28, 2026 at 4:48:32 PM UTC-7
[email protected] wrote:
Thanks for the update. LGTM1.
On Thursday, September 24, 2026 at 3:12:33 AM UTC-7
[email protected] wrote:
ok was faster than i thought, the webkit PR
https://github.com/WebKit/WebKit/pull/65464 landed (behind flag)
Am Mi., 23. Sept. 2026 um 18:10 Uhr schrieb Helmut Januschka
<[email protected]>:
Updated the entry and changed WebKit's status to "In
development.".
Sorry again about the missing platforms checkmark, I filed
three entries around the same time and missed it on all of
them.
WebKit's position on the underlying corner-shaping
proposal is positive:
https://github.com/WebKit/standards-positions/issues/229
There is an open WebKit PR that importet tests:
https://github.com/WebKit/WebKit/pull/74191
I also started an implementation. The PR is a bit
outdated, but I'll revive it in the next few days:
https://github.com/WebKit/WebKit/pull/65464
I don't know what the WebKit timeline would be, though.
Am Mi., 23. Sept. 2026 um 17:12 Uhr schrieb Rick Byers
<[email protected]>:
Looks, like it is implemented on all blink platforms
and the WebKit position is 'support' but not
'shipping'. Right Helmut?
I'm happy to approve once the chromestatus entry is
corrected.
On Mon, Sep 21, 2026 at 11:46 AM Alex Russell
<[email protected]> wrote:
This looks like a good feature; can you perhaps
clarify the WebKit position? Are they implementing
now, or have they just provided support in a
standards position? I don't think the difference
would sway my vote here, but we should strive for
accuracy. If it's the latter, we should also send
an FYI to the TAG as we'll be the first to implement.
Also, Dan spotted that this is not marked as being
supported on all 6 platforms. Presumably that's an
oversight?
Best,
Alex
On Friday, September 18, 2026 at 6:33:46 AM UTC-7
[email protected] wrote:
*Contact emails*
[email protected]
*Explainer*
https://static.januschka.com/i-425897047
*Specification*
https://drafts.csswg.org/css-borders-4/#corner-shaping
*Summary*
Implements the CSS corner shorthand and
per-corner sub-shorthands (corner-top-left,
corner-top-right, corner-bottom-left,
corner-bottom-right) as well as physical
(corner-top, corner-bottom) and logical
(corner-block-start, corner-block-end, etc.)
edge shorthands. These allow setting both
border-radius and corner-shape for individual
corners in a single declaration. Additionally,
corners is retained as a compat alias for the
corner shorthand. sampler:
https://static.januschka.com/i-425897047/ CL:
https://chromium-review.googlesource.com/c/chromium/src/+/7747994
*Blink component*
Blink>CSS
<https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3ECSS%22>
*Web Feature ID*
corner-shape
<https://webstatus.dev/features/corner-shape>
*Motivation*
Currently, setting both the radius and shape
of a corner requires two separate declarations
(border-radius and corner-shape). The CSSWG
resolved (
https://github.com/w3c/csswg-drafts/issues/11623#issuecomment-2982179370 )
to add a corner shorthand that combines both
properties, making it more ergonomic for
authors to style individual corners. For
example: ```css /* Before: two declarations
needed */ border-top-left-radius: 20px;
corner-shape-top-left: squircle; /* After:
single corner shorthand */ corner-top-left:
20px squircle; ```
*Initial public proposal*
https://github.com/w3c/csswg-drafts/issues/6500
*TAG review*
/No information provided/
*TAG review status*
Issues addressed
*Goals for experimentation*
None
*Risks*
*Interoperability and Compatibility*
/No information provided/
/Gecko/:
Positive
(https://github.com/mozilla/standards-positions/issues/823) General
standards-position discussion for CSS corner
shaping. The corner shorthands are an
ergonomic extension that combines the existing
corner-shape and border-radius properties.
/WebKit/:
Shipped/Shipping
(https://github.com/WebKit/standards-positions/issues/229) WebKit
supports the underlying CSS corner-shaping
proposal. These shorthands combine
corner-shape and border-radius without adding
new rendering capabilities.
/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)?*
No
*Is this feature fully tested by
web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?*
Yes
*Flag name on about://flags*
/No information provided/
*Finch feature name*
CSSCornersShorthand
*Rollout plan*
Will ship enabled for all users
*Requires code in //chrome?*
False
*Tracking bug*
https://issues.chromium.org/issues/425897047
*Estimated milestones*
Shipping on desktop 156
Shipping on Android 156
Shipping on WebView 156
Shipping on iOS 156
*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/5152215540039680?gate=4765188386586624
This intent message was generated by Chrome
Platform Status <https://chromestatus.com/>.
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