iframeMonitor is a free Chrome add-on developed by Unruly Software Engineering. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This program aims to remove full-page popup advertisements triggered from iframe clicks.

The add-on is designed to be easy to use, providing a simple "Add" remover/blocker functionality. It also monitors the current page's "active element" state. If the extension is turned on and an iframe is the active page element, the program will search for and close any new windows that may pop up, such as annoying ads.

To start the script, simply click the extension icon on the page where you suspect popups may occur. Clicking the icon again will toggle the script off. The on and off states are easily identifiable by the icon's badge, with green indicating the script is on and red indicating it is off.

With iframeMonitor, users can enjoy a more seamless browsing experience without the annoyance of intrusive popup advertisements.