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.

• Release Notes
• Binary Downloads
• FAQ
• Supported features
• Contributors
• Compiler Assumptions
• Modules

• Flags and Options
• Type Based Property Renaming
• JS Conformance
• Managing Dependencies
• Chunk output for dynamic loading
• Warnings

• Annotating JavaScript for the Closure Compiler
• Closure Type System Overview
• Intro to Annotating Types
• Externs for Common Libraries
• Special Types In the Closure Type System

• RefasterJS