Glossary of reports terms

Ad impressions

An ad impression is reported whenever an individual ad is displayed on your website. Different ad formats will display varying numbers of ads; for example, each time a vertical banner appears on your site, you'll see two ad impressions in your reports. In addition, keep in mind that the number of ads in any ad unit may vary depending on whether the ad unit is displaying standard text ads, expanded text ads, or image ads.

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