# Linty HDL Designer for VS Code [Linty HDL Designer][1] is a VS Code extension that checks over 220 rules in real-time on your HDL (VHDL, Verilog/SystemVerilog and Tcl) code. [Linty HDL Designer][1] also provides detailed and actionable reports on Clock Domain Crossings (CDC), Finite State Machines (FSM), design hierarchy, combinatorial loops, etc. [Linty HDL Designer][1] is the first component of the Linty code quality tool chain. ![Overview](https://linty-services.com/plugins/vscode/images/linty/screencasts/overview.gif) [Browse detailed overview and documentation][1] [1]: https://hdl-designer.linty-services.com "Linty HDL Designer"