JavaScript

JavaScript Compressors

JS Minifier
An online web utility which provides the ability to compress JavaScript so that it is optimized for download efficiency. We have used this utility on a large portal project and never had any issues with the compressed code when using the conservative compression option.

ShrinkSafe
Select one (or more) JavaScript files to upload for shrinking and they will be condensed into a single file and compressed. ShrinkSafe can typically reduce the size of your scripts by a third or more, depending on your programming style. ShrinkSafe is considered safer than compressors that rely on brittle regular expressions because it is instead based on Rhino, a JavaScript interpreter.

YUI Compressor
Minifies both JavaScript code and CSS.

JavaScript Syntax Checkers

JSLint
A JavaScript syntax checker and validator.