There's an ongoing effort (#1568) to use the C# source generator feature to improve start-up performance and reduce private bytes usage during JSON serialization. This same effort can help the linker trim more of System.Text.Json.dll, when used in an application, than it can today. This should reduce the total app size and is important for standalone apps and Blazor client.

Work

• JSON serialization source generator Compile-time source generation for System.Text.Json #45448