By Hella fastSpeed up Contact Form 7 Plugin
Makes Contact Form 7 and several add-ons to load only on pages with a form. Increases PageSpeed and improves load time.
Makes Contact Form 7, reCaptcha and add-ons to load only if there’s a shortcode. Decreases number of unused CSS and JavaScript, makes PageSpeed a little happier.
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Updates
Version 1.1 adds support for Redirection for Contact Form 7 add-on
Installation
Just install the plugin. That’s it. It has been tested on dozens of clients’ website, but we recommend to check if your contact forms work just in case 🙂