On 11/6/25 6:42 p.m., 'Divyansh Mangal' via blink-dev wrote:
Hi Philip, Thanks for the approval!
Providing inputs to your comments below:
> Thanks for the links, I think that the "meaning" in "allowed values
and meaning" is supposed to imply that the same processing model and
algorithm should be used. I do think it would be better if the SVG
spec was more explicit, but that's practically an editorial concern.
Got it, I see your point, I will raise this as an issue to update
the spec for SVG <a> element so that the meaning is a little more
clear in terms of processing model and algorithm as well.
Is there an issue we can follow along to track this?
> If there is any difference at all between SVG <a> and HTML <a> in how
these four attributes are handled I think that needs to be spec'd and
tested, but if it's all the same then this seems straightforward.
And yes, attributes in HTML <a> and SVG <a> are expected to behave
the same.
With Regards
Divyansh
------------------------------------------------------------------------
*From:* Philip Jägenstedt <[email protected]>
*Sent:* 06 November 2025 14:45
*To:* Divyansh Mangal <[email protected]>
*Cc:* blink-dev <[email protected]>
*Subject:* Re: [EXTERNAL] Re: [blink-dev] Intent to Ship: Support
ping, hreflang, type and referrerPolicy for SVGAElement
Hi Divyansh,
Thanks for the links, I think that the "meaning" in "allowed values
and meaning" is supposed to imply that the same processing model and
algorithm should be used. I do think it would be better if the SVG
spec was more explicit, but that's practically an editorial concern.
If there is any difference at all between SVG <a> and HTML <a> in how
these four attributes are handled I think that needs to be spec'd and
tested, but if it's all the same then this seems straightforward.
LGTM1
Best regards,
Philip
On Thu, Nov 6, 2025 at 6:38 AM Divyansh Mangal <[email protected]
<mailto:[email protected]>> wrote:
Hi Philip, SVG2.0 does indeed defines these attributes by giving
references of corresponding definitions of HTML <a> tag attributes.
For ping and referrerPolicy, we have the following, respectively:
https://svgwg.org/svg2-draft/linking.html#AElementPingAttribute
<https://svgwg.org/svg2-draft/linking.html#AElementPingAttribute>
https://svgwg.org/svg2-draft/linking.html#AElementReferrerpolicyAttribute
<https://svgwg.org/svg2-draft/linking.html#AElementReferrerpolicyAttribute>
Moreover, SVG2.0 says:
/These attributes further describe the targetted resource and its
relationship to the current document. Allowed values and meaning
are //as defined for the
<https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-a-element>//|a
<https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-a-element>|//
element
in HTML
<https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-a-element>//./
/
/
But let me know if these references are enough for defining the
behaviour?
With Regards
Divyansh
------------------------------------------------------------------------
*From:* Philip Jägenstedt <[email protected]
<mailto:[email protected]>>
*Sent:* 05 November 2025 16:10
*To:* Divyansh Mangal <[email protected]
<mailto:[email protected]>>
*Cc:* blink-dev <[email protected]
<mailto:[email protected]>>
*Subject:* [EXTERNAL] Re: [blink-dev] Intent to Ship: Support
ping, hreflang, type and referrerPolicy for SVGAElement
Hi Divyansh!
Thanks for working to align SVG and HTML <a> elements!
Can you confirm if
https://svgwg.org/svg2-draft/linking.html#InterfaceSVGAElement
<https://svgwg.org/svg2-draft/linking.html#InterfaceSVGAElement> really
defines all of the behavior you'd like to ship here? In particular
for ping and referrerPolicy, it's non-trivial, and the SVG spec
itself doesn't seem to define anything beyond the IDL attribute
reflection.
I think that updating
https://html.spec.whatwg.org/#hyperlink-auditing
<https://html.spec.whatwg.org/#hyperlink-auditing> and
https://html.spec.whatwg.org/#following-hyperlinks
<https://html.spec.whatwg.org/#following-hyperlinks> to include
SVG <a> or to somehow invoke HTML from the SVG spec would be
enough. Unless this is already covered somewhere I'm not seeing,
can you look into making the appropriate spec changes?
Best regards,
Philip
On Wed, Nov 5, 2025 at 10:39 AM 'Divyansh Mangal' via blink-dev
<[email protected] <mailto:[email protected]>> wrote:
*Contact emails*
[email protected] <mailto:[email protected]>
*Specification*
https://svgwg.org/svg2-draft/linking.html#InterfaceSVGAElement
<https://svgwg.org/svg2-draft/linking.html#InterfaceSVGAElement>
*Summary*
Adds support for ping, hreflang, type, and referrerPolicy
attributes on SVGAElement, aligning its behavior with
HTMLAnchorElement for consistent link handling across HTML and
SVG.
*Blink component*
Blink>SVG
<https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3ESVG%22>
*Web Feature ID*
svg <https://webstatus.dev/features/svg>
*Motivation*
The SVGAElement interface in SVG 2.0 is evolving to align more
closely with HTML anchor elements, now supporting attributes
like ping, hreflang, type, and referrerPolicy. This promotes
consistency across web technologies and gives developers more
control over link behavior and metadata.
ping: Specifies URLs to be notified when a link is followed,
enabling lightweight tracking and analytics without disrupting
navigation.
hreflang: Indicates the language of the linked resource,
improving accessibility and helping search engines serve
localized content.
type: Declares the MIME type of the linked resource, allowing
smarter handling and performance optimization.
referrerPolicy: Controls how much referrer info is sent when
navigating. Policies like no-referrer or
strict-origin-when-cross-origin enhance privacy and security.
These enhancements make SVG links more powerful, predictable,
and aligned with modern web standards.
*Initial public proposal*
/No information provided/
*TAG review*
/No information provided/
*TAG review status*
Not applicable
*Risks*
*Interoperability and Compatibility*
/No information provided/
/Gecko/:
Shipped/Shipping
(https://developer.mozilla.org/en-US/docs/Web/API/SVGAElement#browser_compatibility
<https://developer.mozilla.org/en-US/docs/Web/API/SVGAElement#browser_compatibility>)
Gecko only partially supports the ping attribute
Open bug for full implementation for ping attribute in Gecko:
https://bugzilla.mozilla.org/show_bug.cgi?id=951104
<https://bugzilla.mozilla.org/show_bug.cgi?id=951104>
hreflang, type and referrerPolicy are fully supported.
/WebKit/:
Neutral (https://github.com/WebKit/standards-positions/issues/566
<https://github.com/WebKit/standards-positions/issues/566>)
WebKit has recently shipped hreflang and type attribute
support for SVG <a> element
/Web developers/: No signals
/Other signals/: 10+ users have upvoted on the Chromium bug.
*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*
Attributes will be inspectable via DevTools Elements panel,
consistent with HTML <a> element.
*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
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>**?*
Yes
For ping:
Https://wpt.fyi/results/svg/linking/scripted/a.ping-functionality.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/svg/linking/scripted/a.ping-functionality.html?label=experimental&label=master&aligned>
for hreflang:
Https://wpt.fyi/results/svg/linking/scripted/a.hreflang-getter-01.svg?label=experimental&label=master&aligned
<https://wpt.fyi/results/svg/linking/scripted/a.hreflang-getter-01.svg?label=experimental&label=master&aligned>
for type:
Https://wpt.fyi/results/svg/linking/scripted/a.type-getter-01.svg?label=experimental&label=master&aligned
<https://wpt.fyi/results/svg/linking/scripted/a.type-getter-01.svg?label=experimental&label=master&aligned>
Https://wpt.fyi/results/svg/linking/scripted/a.type-getter-02.svg?label=experimental&label=master&aligned
<https://wpt.fyi/results/svg/linking/scripted/a.type-getter-02.svg?label=experimental&label=master&aligned>
for referrerPolicy:
120 new WPTs tests are generated for checking the various
cases of referrerPolicy, the tests have the pattern
*referrer-policy/gen/*/svg-a-tag.http.html*
for example:
https://wpt.fyi/results/referrer-policy/gen/top.meta/never/svg-a-tag.http.html
<https://wpt.fyi/results/referrer-policy/gen/top.meta/never/svg-a-tag.http.html>
*Flag name on about://flags*
/No information provided/
*Finch feature name*
SvgAnchorElementAttributes
*Rollout plan*
Will ship enabled for all users
*Requires code in //chrome?*
False
*Tracking bug*
https://issues.chromium.org/issues/40589293
<https://issues.chromium.org/issues/40589293>
*Estimated milestones*
Shipping on desktop
144
Shipping on Android
144
Shipping on WebView
144
*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/5140707648077824?gate=6224522713890816
<https://chromestatus.com/feature/5140707648077824?gate=6224522713890816>
This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.
--
You received this message because you are subscribed to the
Google Groups "blink-dev" group.
To unsubscribe from this group and stop receiving emails from
it, send an email to [email protected]
<mailto:[email protected]>.
To view this discussion visit
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/SEYP153MB1097BD3F67D4555910484B16ADC5A%40SEYP153MB1097.APCP153.PROD.OUTLOOK.COM
<https://groups.google.com/a/chromium.org/d/msgid/blink-dev/SEYP153MB1097BD3F67D4555910484B16ADC5A%40SEYP153MB1097.APCP153.PROD.OUTLOOK.COM?utm_medium=email&utm_source=footer>.
--
You received this message because you are subscribed to the Google
Groups "blink-dev" group.
To unsubscribe from this group and stop receiving emails from it, send
an email to [email protected].
To view this discussion visit
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/SEYP153MB1097D2B26434C9571BCDF07BADC2A%40SEYP153MB1097.APCP153.PROD.OUTLOOK.COM
<https://groups.google.com/a/chromium.org/d/msgid/blink-dev/SEYP153MB1097D2B26434C9571BCDF07BADC2A%40SEYP153MB1097.APCP153.PROD.OUTLOOK.COM?utm_medium=email&utm_source=footer>.
--
You received this message because you are subscribed to the Google Groups
"blink-dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion visit
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/3b1cfff2-3e4d-4e8c-b2ca-343c62e7ffcd%40chromium.org.
