A simple yet the most popular toolkit to disable all the methods that can enter the developer tools to prevent code handling through the developer tools.
Simple and Amazing wordpress copy protect plugin. This plugin will be able to block the mouse right button, Ctrl + C key, Ctrl + U key , and F12 key.
http://www.sumonhasan.com/smart-copy-protect/
WP Copy Content Protection wordpress plugin protects the content from being stolen by content thieves. It disables the right-mouse click and disables keyboard commands. If someone copies the content then you can gain backlink for your blog by showing him Copyright Information with copied text, and more.
Disable Right Click Ninetyseven Infotech | Disable Right Click Ninetyseven Infotech is a free wordpress plugin. It disables right click, CTRL+C, CTRL+X on wordpress site.
CPROTEXT protects your texts and images from unauthorized and fraudulent copy.
The protected contents are immune to in-browser copy/paste and web scraping.
This plugin will protect the posts content from copying by disable right click and disable selecting text. You can exclude pages and posts. It also keeps from dragging images. The message window can change color design.