Banners come in all kinds of sizes. To achieve the desired results with your campaign, it is important to choose good ad formats. There are a number of formats that are most commonly used. The most popular banner sizes are:

120×600 – skyscraper
160×600 – large skyscraper
300×600 – wide skyscraper
300×250 – rectangle
336×280 – large rectangle
200×200 – small square
250×250 – square
468×60 – banner
728×90 – leaderboard
970 ×250 – billboard
320×50 – leaderboard mobile banner
320×100 – large mobile banner
320×480 – full screen interstitial