Contact Form 7 is a very popular form builder plugin. Unfortunately it will enqueue its assets on every pages, even if the page doesn’t contain any contact form.

If Contact Form 7 is installed and active on your site, Swift Performance will detect it, and offer the option to dequeue CF7 assets on all pages which doesn’t contain any form.

Plugins tab is hidden in simple view. This option is available only if Advanced view is enabled and Contact Form 7 is active.