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Make minified code readable (again!)

When the source file is minified, it is not human readable (for mere mortals) in “Sources” tab of Chrome dev-tools. Chrome provides a way to help you out in such scenarios.

You can make it legible by using PrettyPrint {} icon just below. You may also find Pretty Print Button shown on top of the file, to perform the same functionality. It transforms the current file into human-readable form.

Pretty Print or Format options only un-minifies the source file. It does not help in tackling uglification/obfuscation of code. To achieve those, source maps (if available) can also be used.


  • Minification is the act of removing all the unnecessary white spaces and redundant optional tokens to achieve performance gains.
  • Uglification is the act of transforming the code into an “unreadable” form, that is, renaming variables/functions to hide the original intent.
  • Obfuscation is deliberate act of creating source or machine code that is difficult for humans to understand. Programmers may intentionally obfuscate code to conceal its purpose.