Any options to decrease the Portable Library (DLL) Size while compiling

What is the best way to decrease the DLL size while compiling as .Netstandard portable library. I am developing an Xamarin application, where I have .Netstandard libraries referred to the UWP project as Library reference. Size of DLL is getting increased drastically and it is causing lot of issues.

Is there a best way to decrease the size while compiling or after compiling? Currently I am using dotnet build/ pack in azure Devops to generate the DLL

Thanks in advance for any suggestions