Multiple origins are possible, yeah:
https://web-platform-tests.org/writing-tests/server-features.html#tests-involving-multiple-origins
On 6/2/25 5:41 PM, 'Lu Huang' via blink-dev wrote:
I thought about adding manual WPTs for this feature but it would
require serving from 2 different origins in the test environment. We
did this in browser tests. Is that also feasible in WPTs?
On Monday, June 2, 2025 at 12:01:23 PM UTC-7 dan...@microsoft.com wrote:
> Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?
> No
I assume lack of WPTs is due to limitations of testing web app
functionality in web-platform-tests.
In the past it looks like manual WPTs have been added for certain
PWA features in
https://github.com/web-platform-tests/wpt/tree/master/appmanifest.
Have you given any thought to adding any of that type of coverage
for this?
-- Dan
On Wednesday, May 28, 2025 at 3:51:12 PM UTC-7
sligh...@chromium.org wrote:
I'm recused from this one, but grateful and happy to see it
moving forward. Godspeed!
On Thursday, May 22, 2025 at 2:12:29 PM UTC-7 Chromestatus wrote:
Contact emails
lu...@microsoft.com, luig...@microsoft.com,
dmu...@chromium.org
Explainer
https://github.com/WICG/manifest-incubations/blob/gh-pages/scope_extensions-explainer.md
Specification
https://github.com/WICG/manifest-incubations/pull/113
Design docs
https://docs.google.com/document/d/1-idhx8heajbPYl3cdXFVCjpIuf96cRa_DrRk6147ELI/edit?usp=sharing
Summary
Adds a "scope_extensions" web app manifest field that
enables web apps to extend their scope to other origins.
Example usage: { "name": "Example", "display":
"standalone", "start_url": "/index.html",
"scope_extensions": [ {"type" : "origin", "origin" :
"https://example.com"} ] } This allows sites that control
multiple subdomains and top level domains to be presented
as a single web app. Requires listed origins to confirm
association with the web app using a
.well-known/web-app-origin-association configuration file.
{ "https://sample-app.com/": { "scope": "/" } }
Blink component
UI>Browser>WebAppInstalls
<https://issues.chromium.org/issues?q=customfield1222907:%22UI%3EBrowser%3EWebAppInstalls%22>
TAG review
https://github.com/w3ctag/design-reviews/issues/875
TAG review status
Issues addressed
Origin Trial Name
Web App Scope Extensions
Chromium Trial Name
WebAppScopeExtensions
Origin Trial documentation link
https://github.com/WICG/manifest-incubations/blob/gh-pages/scope_extensions-explainer.md
WebFeature UseCounter name
kWebAppManifestScopeExtensions
Risks
Interoperability and Compatibility
/Gecko/: No signal
(https://github.com/mozilla/standards-positions/issues/904)
/WebKit/: No signal
(https://github.com/WebKit/standards-positions/issues/265)
/Web developers/: Positive
https://github.com/WICG/manifest-incubations/issues/105
https://github.com/WICG/manifest-incubations/issues/46
/Other signals/:
Ergonomics
None.
Activation
None.
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. Does not affect existing APIs. Developers must opt
in with web app manifest.
Debuggability
DevTools Application pane will be the appropriate surface
to add debugging support. Specifically, a section can be
added to help troubleshoot the status of origin
association validation. Additionally,
edge://web-app-internals/ also have relevant information
for debugging.
Will this feature be supported on all six Blink
platforms (Windows, Mac, Linux, ChromeOS, Android,
and Android WebView)?
No
Supported on Windows, MacOS, Linux, ChromeOS. Not
supported on mobile platforms where app identity is
implemented differently.
Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?
No
Flag name on about://flags
about://flags/#enable-desktop-pwas-scope-extensions
Finch feature name
WebAppScopeExtensions
Rollout plan
Will ship enabled for all users
Requires code in //chrome?
False
Tracking bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1250011
Availability expectation
Feature is available only in Chromium browsers for the
foreseeable future. No signal from other vendors.
Adoption expectation
Feature is used by specific partner(s) to provide
functionality within 12 months of launch in Chrome.
Non-OSS dependencies
Does the feature depend on any code or APIs outside the
Chromium open source repository and its open-source
dependencies to function?
None.
Sample links
https://main-pwa-origin-2.glitch.me
Estimated milestones
Shipping on desktop 138
Origin trial desktop first 122
Origin trial desktop last 127
DevTrial on desktop 115
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).
https://github.com/WICG/manifest-incubations/issues?q=is%3Aissue%20state%3Aopen%20label%3Ascope-extensions
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5746537956114432?gate=5071001451233280
Links to previous Intent discussions
Intent to Prototype:
https://groups.google.com/a/chromium.org/g/blink-dev/c/-iySPmw8o34/m/oLgrCUQXAQAJ
Ready for Trial:
https://groups.google.com/a/chromium.org/g/blink-dev/c/OBZBZwS6qr0/m/VRySwd40AQAJ
Intent to Experiment:
https://groups.google.com/a/chromium.org/g/blink-dev/c/rGcbrUBB-5E
This intent message was generated by Chrome Platform
Status <https://chromestatus.com>.
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