When registering, image compression

compression

When registering, you want to upload an avatar, the general picture is relatively large, the general picture is that the compression processing on the client or server side processing?<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
Reply:
I think the client-side processing, ah, or how much traffic was consumed
Reply:

cited a floor guoyoulei520 reply:

client processing ah, I think, or how much

traffic was consumed

First image compression, and then the compressed image to the server?