This extension is defeated by Chrome's "inspect element" function, user agent spoofing, and I'm sure many more functions. (try it out the demo page)
Thanks for your review.
This extension will prevent most of the internet users from viewing your HTML code and make it harder from those who have the right knowledge and skill to view the HTML code.
With this extension, you will able to decrease the number of internet users who can easily view your HTML code from 100% to a community of people who have the right knowledge and skill.