I was wondering if there's some constant telling WordPress not to use the minified versions of scripts but instead load .dev ones. Already tried define('SCRIPT_DEBUG', true); but it only turned off script unification.

1 Answer 1


I use a combination of constants on my local install.

define('CONCATENATE_SCRIPTS', false);
define('COMPRESS_SCRIPTS', false); // <--- this is likely the one you're after
define('COMPRESS_CSS', false);
define('SCRIPT_DEBUG', true);

I'd imagine the second constant listed above is the one you're after.

  • Could be me, but that didn't make it. Does it matter where in the wp-config those are dropped in? I put them at the end
    – Z. Zlatev
    Jul 28, 2011 at 8:31
  • You may need to define them before the require line, mine are placed just before the $table_prefix var is set, and it works just fine for me..
    – t31os
    Jul 28, 2011 at 8:36
  • 2
    All I needed was to add the 'SCRIPT_DEBUG' and WordPress started using the .dev.js versions.
    – Tom Auger
    Feb 14, 2012 at 21:02

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