{"id":4333,"date":"2021-09-21T11:02:40","date_gmt":"2021-09-21T11:02:40","guid":{"rendered":"https:\/\/www.adspyglass.com\/blog\/glossary-viewability\/"},"modified":"2021-09-28T15:14:24","modified_gmt":"2021-09-28T15:14:24","slug":"viewability","status":"publish","type":"post","link":"https:\/\/www.adspyglass.com\/blog\/viewability\/","title":{"rendered":"Viewability"},"content":{"rendered":"<p><span>Viewability is a metric used in online advertising to track the impressions that human users see, which are termed viewed impressions. For instance, if an ad loads at the end of a webpage but the users don&rsquo;t scroll down to the point where it is to see it, that&rsquo;s not a viewed impression. With viewability, the advertisers get to pay for only the ads that the users see.<\/span><\/p>\n<p><span>Display impressions are deemed viewable if it has at least 50% of its pixel on the user&rsquo;s screen for one continuous second. In comparison, video impressions are viewable if at least 50% of its pixel is on the screen for two consecutive seconds.<\/span><\/p>\n<p><span>Impressions are often classified into three:<\/span><\/p>\n<ul>\n<li><span><strong>Served impressions<\/strong><\/span><span>: These ads are served and counted with the server data. It is impossible to track regular impressions on these ads as the server data don&rsquo;t support analysis of user behavior data.<\/span><\/li>\n<li><span><strong>Measurable and eligible impressions<\/strong><\/span><span>: The advertisements are downloaded and kept on the user&#8217;s mobile device and considered while counting eligible impressions, even though they haven&rsquo;t seen them yet.<\/span><\/li>\n<li><span><strong>Viewable impressions<\/strong><\/span><span>: These are the relevant viewable ads measured as the percentage of adverts that the audience sees. These are adverts that are displayed for over a second and with over 50% pixels displayed.<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Viewability is a metric used in online advertising to track the impressions that human users see, which are termed viewed impressions. For instance, if an ad loads at the end of a webpage but the users don&rsquo;t scroll down to the point where it is to see it, that&rsquo;s not a viewed impression. With viewability, [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[93,115],"tags":[123,1244,1243,1245],"class_list":["post-4333","post","type-post","status-publish","format-standard","hentry","category-glossary","category-v","tag-adspyglass-glossary","tag-viewability-definition","tag-viewability-term","tag-what-is-viewability"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Viewability<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.adspyglass.com\/blog\/viewability\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Viewability\" \/>\n<meta property=\"og:description\" content=\"Viewability is a metric used in online advertising to track the impressions that human users see, which are termed viewed impressions. 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