Prefer-Html-Meta-Tags:

Prefer-Html-Meta-Tags:

[1] Docs – App Links ( 版) <http://applinks.org/documentation/>

When crawling URLs for App Link metadata, developers should send a request with al as one of the prefix values for the Prefer-Html-Meta-Tags header. Your server may choose to limit its response to only include HTML containing the tags above, and can use this as a signal to return these tags even when the response type for the given location would otherwise be something other than text/html.

Prefer-Html-Meta-Tags: al