Closure Tools

What is the Closure Compiler?

The Closure Compiler is a tool for making JavaScript download and run faster. It is a true compiler for JavaScript. Instead of compiling from a source language to machine code, it compiles from JavaScript to better JavaScript. It parses your JavaScript, analyzes it, removes dead code and rewrites and minimizes what's left. It also checks syntax, variable references, and types, and warns about common JavaScript pitfalls.

How can I use the Closure Compiler?

You can use the Closure Compiler as:

  • An open source Java application that you can run from the command line.
  • A simple web application.
  • A RESTful API.
  • To get started with the compiler, see "How do I start" to the right.

    What are the benefits of using Closure Compiler?

    Authentication required

    You need to be signed in with Google+ to do that.

    Signing you in...

    Google Developers needs your permission to do that.