Ad blockers are programs designed to remove or make alterations to the advertisements on the webpages. It is usually in the form of a browser extension and works in only blocking ad on the browser. There are more powerful ad blockers which function as standalone software that can eliminate ads on all types of web browsers. Every ad blocker is different – some will replace the advertisement with something else while others will leave the place empty with broken links of the ads. The following is a description of how an ad blocker work.