I have noticed that there currently appears to be no support for requesting a compressed response (gzip/deflate) with the Invoke-[RestMethod|WebRequest] cmdlets. It would be useful to have support for this (curl implements this via the --compressed flag).

Conditional support can be added via the AutomaticDecompression property of the WebRequest class for FullCLR, and using a new HttpClientHandler with HttpClient for CoreCLR. Support would be added with a new cmdlet parameter (suggest -Compressed ?)

I'm happy to put a pull request in for this - however just making sure this functionality is desirable before adding.