How to filter (hide) Pre-flight requests on my Dev Tools Network

By default "All" requests will be displayed in network tab. To see OPTIONS requests, you can select "Other". To see only your web api requests, you can select "XHR" (which wont show OPTIONS request).

The quickest way to do this is to filter on -method:OPTIONS.

Explanation: all pre-flight requests are via the HTTP OPTIONS method (opposed to POST or GET). This filter says "not method OPTIONS".

Note the leading hyphen because if you forget it, you'll only show pre-flight requests.