Disable Mootools

Disabling Mootools Library will effect the performance of your website positively.

Enable - Disable Mootools Library for the entire site only for selected page(s)
Enable - Disable jQuery Library for entire site or only for selected page(s)
Enable - Disable Bootstrap for entire site or only for selected page(s)
Plugin works at front-end only, you do not need to worry for /administrator area. It will not disable Mootools at back-end.
Mootools option Disables 4 js files - around 330 kB
media/system/js/caption.js
media/system/js/mootools-core.js
media/system/js/core.js
media/system/js/mootools-more.js

jQuery option Disables 4 js files - around 100 kB
media/jui/js/jquery.min.js
media/jui/js/jquery-noconflict.js
media/jui/js/jquery-migrate.min.js