Closure Compiler is a JavaScript optimizing compiler. 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. It is used in many of Google's JavaScript apps, including Gmail, Google Web Search, Google Maps, and Google Docs.

Artifacts using closure-compiler version r2180 (20)
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ClojureScript compiler and core runtime library.
Last Release on May 7, 2026
Bootstrap Extensions
Last Release on Dec 22, 2025
Wro4j Extensions
Last Release on Sep 29, 2023
Client-side resource management
Last Release on Feb 27, 2014
ClojureScript compiler and core runtime library.
Last Release on Aug 17, 2017
Bootstrap Extensions
Last Release on Jan 10, 2013
Maven plugin for LESS to CSS compiliation
Last Release on Jan 6, 2014
Maven plugin for RequireJS optimization
Last Release on Feb 27, 2014
The plugin that will create a debug version and run the Google Closure Compiler on the source code to create a heavily minified file.
Last Release on Apr 16, 2015
Maven plugin for RequireJS optimization
Last Release on May 31, 2013