Ping DOM element is a free Chrome extension developed by Peter Kiss. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools subcategory.

This extension allows users to check if a specific DOM element is available on a given URL. It provides a simple and convenient way to monitor the presence of an element on a webpage. When the element is found, a green button is rendered, and when it is not found, a red button is displayed.

Ping DOM element runs in the background and periodically checks the specified URL. It utilizes Chrome's alarm API to ensure that it doesn't consume excessive resources. The frequency of the checks is approximately 1 request per minute.