jscompress

Between Yahoo! UI Compressor , Dean Edwards Packer and jsmin , which produces better results, both in terms of resulting footprint and fewer errors when obfuscating. Better is a bit subjective here, since there are multiple factors to consider (even beyond those you list): Compressed size doesn't tell the whole story, since an aggressive compressor can result in slower run-time performance due to the additional time needed to run unpacking code prior to browser interpretation. Errors are easiest to avoid when you control the input code - judicious use of semicolons goes a long way. Run JSLint

I'm looking for some applications or websites that minimize css and js files. Ideally, they could batch them all or if not, one at a time. YUI Compressor does both JavaScript and CSS. I'm not sure if you can send it a batch of files. You can batch process at YUI Compressor Online (yui.2clics.net) , though that version only accepts JavaScript. Another Online YUI Compressor (refresh-sf.com) accepts CSS, too, but doesn't batch. In terms of comparing the various minifiers, see jQuery : Frequently Asked Questions (FAQ) : How do I compress my code? Also, check out Microsoft Ajax Minifier . jQuery

When working with large and/or many Javascript and CSS files, what's the best way to reduce the file sizes? Jim In addition to using server side compression, using intelligent coding is the best way to keep bandwidth costs low. You can always use tools like Dean Edward's Javascript Packer , but for CSS, take the time to learn CSS Shorthand . E.g. use: background: #fff url(image.gif) no-repeat top left; ...instead of: background-color: #fff; background-image: url(image.gif); background-repeat: no-repeat; background-position: top left; Also, use the cascading nature of CSS. For example, if you

What do you use to minimize and compress JavaScript libraries? I use YUI Compressor . Seems to get the job done well! I've used YUI Compressor for a long time and have had no problems with it, but have recently started using Google Closure Compiler and had some success with it. My impressions of it so far: It generally outperforms YUI Compressor in terms of file size reduction. By a small amount on simple mode, and by a lot on advanced mode. Simple mode has so far been as reliable as YUI Compressor. Nothing I've fed it has shown any problems. Advanced "compilation" mode is great for some