By default, WordPress 3.5 doesn’t specify the file size on the individual attachment’s editing screen. Today I’m sharing with you a tiny snippet that will add exactly that — so now on you’ll be able to know what’s the size of the file you’re looking at.
You should add this snippet to your functionality plugin. But yes, it will also work if you place it in your
functions.php file within the active theme.
https://gist.github.com/4647839Tags: snippet, WordPress 3.5