Comscore: US Online Display Advertising Statistics
As per Comscore report, JPEG display ads in the US led the market with 42 percent of impressions. While “leaderboard”-728 x 90 in dimension ads were the most commonly viewed display ad by size. Nearly 60 percent of US display ad impressions was standard GIF/JPEG type, in April. JPEGs contributed for 42.4 percent of ad impressions. GIFs contributed for 14.1 percent. 40.3 percent of all display ads was combinedly represented by flash and rich media. …
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