Alex Rivera | Logout

Tool to Unminify / Decompress JavaScript

Asked 2009-05-04T21:20:32.833
441

Are there any command line scripts and/or online tools that can reverse the effects of minification similar to how Tidy can clean up horrific HTML?

(I'm specifically looking to unminify a minified JavaScript file, so variable renaming might still be an issue.)

javascript code-formatting minify compression unminify
Edit
Report

2 Answers

162

Chrome developer tools has this feature built-in. Bring up the developer tools (pressing F12 is one way), in the Sources tab, the bottom left bar has a set of icons. The "{}" icon is "Pretty print" and does this conversion on demand.

UPDATE: IE9 "F12 developer tools" also has a "Format JavaScript" feature in the Script tab under the Tools icon there. (see Tip #4 in F12 The best kept web debugging secret)

enter image description here

answered 2011-08-22T15:22:33.323
10

If you have a Mac and TextMate - An easy alternative for formatting Javascript is:

  1. Open the file with Textmate.
  2. Click on > Bundles > JavaScript > Reformat Document
  3. Crack open a beer.
answered 2011-10-11T22:53:24.020

Your Answer