Page checker is a free Chrome add-on developed by Capslock66. It falls under the category of browsers and is specifically classified as an add-on and tool. This handy tool allows users to monitor changes on web pages.

The main feature of Page checker is its ability to detect and notify users of any changes that occur on specific web pages. To effectively filter the content to be monitored, users need to have knowledge of jQuery selectors. By utilizing these selectors, users can specify the elements they want to track for changes.

With Page checker, users can easily stay updated on any modifications made to their favorite web pages. Whether it's a news article, a product page, or any other type of content, this add-on ensures that users never miss any updates. The intuitive interface and straightforward functionality make Page checker a valuable tool for those who want to stay informed about page changes.

Please note that Page checker does not provide any means to contact the developer or offer feedback. The focus of this add-on is solely on monitoring page changes.