C# Formatter
Lays C# out in Visual Studio's default style, wraps lines at 70 characters and sorts usings, then lists the naming and other standards it cannot fix for you. It checks its own output token for token and hands your code back unchanged rather than guess.
Formatted C# appears here.
To fix by hand
Visual Studio's default layout, plus team rules: lines wrapped at 70, usings sorted, and blank lines between methods and between the steps of a method.
It only moves whitespace. If anything else would change, you get your code back with the reason. Names, repeated strings and other things it can't fix are listed under the output.
Private by design: everything runs in your browser. The code you paste is never uploaded, logged, or stored anywhere.