Contact emails

[email protected]

Explainer

https://github.com/abinpaul1/resource-timing/blob/explainer-content-type/Explainers/Content-Type.md

Specification

Resource Timing PR : https://github.com/w3c/resource-timing/pull/341

Fetch PR : https://github.com/whatwg/fetch/pull/1481


Summary

Adds a field to PerformanceResourceTiming that holds a string corresponding
to the Content-type header of the fetched resource when the resource was
fetched.


Blink component

Blink>PerformanceAPIs>ResourceTiming
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EPerformanceAPIs%3EResourceTiming>

TAG review

https://github.com/w3ctag/design-reviews/issues/785

TAG review status

Issues addressed

Risks

Interoperability and Compatibility

Gecko: Positive (https://github.com/mozilla/standards-positions/issues/705)

WebKit: No signal (https://github.com/WebKit/standards-positions/issues/88)

Web developers:

Developer interest for the feature :
https://github.com/w3c/resource-timing/issues/203

Other signals:

Ergonomics

No


Activation

No risks


Security

No risks


WebView application risks

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


Debuggability

The new attribute shows up in Devtools. No implementation changes are
required.

Will this feature be supported on all six Blink platforms (Windows, Mac,
Linux, Chrome OS, 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

https://wpt.fyi/results/resource-timing/content-type.html?label=master&label=experimental&aligned
https://wpt.fyi/results/resource-timing/content-type-parsing.html?label=master&label=experimental&aligned

Flag name

#enable-experimental-web-platform-features

Requires code in //chrome?

False

Tracking bug

https://bugs.chromium.org/p/chromium/issues/detail?id=1366706


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?

No

Estimated milestones

Chrome for desktop 115

Chrome for Android 115

Android Webview 115


Anticipated spec changes

No ongoing discussion that could lead to future changes


Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5156068351541248

Links to previous Intent discussions

Intent to prototype:
https://groups.google.com/a/chromium.org/g/blink-dev/c/Dk2uL_gXpZc/m/OhY2ZomeAwAJ

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