Platforms or websites have different placements where your ad can show on a page. Certain ad sizes coincide with where the ad can be shown on the webpage. If you don’t have the right ad sizes, you can miss out on the most effective advertising placements on a webpage or platform and limit your reach and performance. That’s why it can be important to have a mix of some of the top ad sizes so that you don’t miss out on any placements and make sure you’re maximizing the effectiveness of your campaign. Similarly, it’s been shown that different ad sizes have a better click-through-rate than others which is a key for improving performance. So with all that being said, let’s dive into some of the top ad sizes to use.
300x250: Also known as a “medium rectangle” ad – good inventory availability and a higher CTR compared to other sizes.
728x90: Also known as a “leaderboard” ad – good inventory availability and good CTR compared to other sizes.
300x600: Also known as a “half-page” ad – good inventory availability and good CTR.
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320x100: Mobile compatible size also known as a “large mobile banner” – good mobile inventory and performance.
320x480: Mobile compatible size on the DV360 platform – also known as the "mobile interstitial” – high performance with good CTR.
320x50: Mobile compatible size also know as a “mobile leaderboard”– good mobile inventory.
1080x1080: Square ad best used for Display Newsfeed or Carousel ads.
1080x1920: Similar to Facebook & Instagram stories, Snapchat needs a 1080x1920 sized image for the best results.
1200x628: Display ad that can be used for Newsfeed, Right Column placements, or Audience Network – not as wide as 1080x1080 so doesn’t take up as much real estate on the page.
1080x1920: Best used for Facebook & Instagram stories.
While there are other platforms and ad specifications, these are some of the more popular platforms and their best performing ad sizes and are a good jumping off point. If you have any other questions or want to talk more in detail about ad sizes or best practices, please don't hesitate to reach out - that's what we're here for!