Google offers a wide range of display and video ad formats, or creatives, across the AdWords, DoubleClick, AdSense and AdMob platforms. Now you can access essential information about all of these formats from a single location to easily compare and find formats that best fit your needs.
http://www.richmediagallery.com/adformats

I’m founder and director of The Digital Agency; a certified Google Partner and Shopify Partner digital marketing agency operating in London and Istanbul. The Digital Agency has a solid track record of delivering high growth in eCommerce, Facebook & Google advertising, social media communication, search engine optimization, eCommerce and website production through 16 years of experience with 140 brands in 500 projects. Visit The Digital Agency here