Ghostery is a browser tool available for most browsers and as a stand-alone app for iOS. Ghostery scans web pages for trackers, that is, scripts, pixels and other elements. It notifies you about code on web pages that you visit.
Trackers are usually not visible and often are not listed in the source code. Ghostery helps you to block page elements. It is your window into the tags, web bugs, pixels, and beacons that are included on web pages, essentially giving you a picture of ad networks, behavioral data providers, web publishers, and other companies tracking web site activity.
Ghostery allows you to block any ad, and open communication with ad companies at your discretion.
Download Ghostery from: https://www.ghostery.com/en/download
For more information about Ghostery see: https://www.ghostery.com/en/faq