From the preferences page it is possible to:
This extension supports optional syntax highlighting based on Google's PrettyPrint parser but it is very slow and sometimes hurts my eyes with strange guessing so personally I don't recommend to enable it.
There is known speedwise incompatibility with scripts that actively and regardlessly meddle with DOM processing. It can result impairment of highlighting performance to a great extent.
Based on the folowing projects: Code Prettify // Copyright (C) 2006 Google Inc. JS-Beautify // Copyanywhere (?) Einar Lielmanis, [email protected]