Beautify and de-obfuscate your CSS, JS, and HTML files.
Above is the minified jquery.tabs.min.css file. And below is the file after being unminified:
One can easily copy and paste the CSS code to your PC and start testing /changing as required. Frequently I copy a new CSS or JS file I am working on, paste it into Unminify.com in order to reformat the file. The downside is that users cannot control issues like long line wrap breaks or number of spaces for each level of indent in the formatting/ Also unmiifying LESS and SASS/SCSS files is not supported
But Unminify handles large size files; above is an example of unminifying the jquery.min.js file at 3120 lines. jquery-ui.mon.js comes in at 13,000 lines. I like the online version of Unminify because it is available wherever you are working. Of course there is an online version of Minify [which works in the same way]; but compresses your code. This leads to the question of compresing your code using Minify and/or Gzip, but that is a discussion for another day.