Here's Johnny is a free Chrome add-on developed by scotthitch5. It falls under the category of Browsers and specifically belongs to the Add-ons & Tools subcategory. This add-on offers a quick and easy way to replace a random image on your webpage with an image of Johnny.

With Here's Johnny, you can instantly inject a touch of humor or surprise onto your webpage. Whether you're looking to add a fun element to your personal website or want to prank your friends, this add-on allows you to replace any image with a random image of Johnny. Simply install the add-on, choose the webpage you want to modify, and let Here's Johnny work its magic.

The simplicity and ease of use make Here's Johnny a convenient tool for those looking to add a bit of unexpected fun to their browsing experience. So why not give it a try and bring a smile to your face with a surprise appearance from Johnny?