Plugin organizer is a wordpress plugin.
This plugin allows you to do the following:
1. Change the order that your plugins are loaded.
2. Selectively disable plugins by any post type or wordpress managed URL.
3. Adds grouping to the plugin admin age.
WARNING: Reordering or disabling plugins can have catastrophic affects on your site. It can cause issues with plugins and can render your site inaccessible.
By using plugin organizer, you can disable plugins that not need on your page, post, custom post, mobile site. For example contact form 7 loads it’s js file on every page and post but you need them only on pages where you inserted contact form. Using plugin organizer, you can disable contact form 7 on others page where you don’t need this.
This will greatly improve your site’s performance.