Find the Right Size

Find the Right Size
Ad size also plays a crucial role in catching the readers’ eyes and also in attracting better ads. Generally, bigger ads perform better. However, too big is also bad. According to Darren, the Medium Rectangle size (300 x 250) tends to perform better than the Large Rectangle. This is due to the fact that more advertisers tend to prefer the Medium Rectangle because of its wide use.

The AdSense blog, too, recommends the Medium Rectangle along with the Leaderboard (728 x 90) and Skyscraper (160 x 600) formats.