Contact emails
[email protected]

Specification
https://mimesniff.spec.whatwg.org/#xml-mime-type


Summary
Chromium recognizes any valid MIME type whose subtype ends in +xml as an XML 
MIME type, instead of limiting generic suffix matching to application/*+xml. 
This aligns PerformanceResourceTiming.contentType with the WHATWG MIME Sniffing 
Standard for types such as text/example+xml and image/example+xml.


Blink component
Blink>Network


Web Feature ID
No information provided


Motivation
Chromium currently applies generic +xml suffix matching only to application/* 
MIME types, although the WHATWG MIME Sniffing Standard defines any valid MIME 
type whose subtype ends in +xml as an XML MIME type. As a result, 
non-application types such as text/example+xml are not minimized to 
application/xml in PerformanceResourceTiming.contentType. This change aligns 
Chromium's classification with the existing standard and improves 
interoperability. Draft implementation: 
https://chromium-review.googlesource.com/c/chromium/src/+/8301932


Initial public proposal
No information provided


Goals for experimentation
None


Requires code in //chrome?
False


Tracking bug
https://issues.chromium.org/issues/362282752


Estimated milestones

No milestones specified



Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5092584283308032?gate=4882932232749056


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