Create an interstitial ad unit

Interstitial ad units show full-page ads in your app. Place them at natural breaks and transitions in your app's interface, such as after level completion in a gaming app.

Interstitial ad units can show the following types of ads: Text, image and rich media and Video.

Note: The timing of a close option for interstitials depends on whether your interstitials are opted into video. If they are opted into video, some ads may have up to a 5-second delay before providing a close option. By policy, interstitials that don’t allow video will have an immediate close option. The Google Mobile Ads SDK will begin enforcing this more aggressively with releases of the Google Mobile Ads SDK: 7.21 or later for iOS, and 11.4 or later for Android.

 

AdMob interstitial ad guidance

Before you implement interstitial ad units in your apps, make sure that you've reviewed the AdMob help centre Policy section. You can get interstitial ad implementation guidance and learn more about the interstitial ad implementations that we discourage.

 

The following steps will help you create a new ad unit in your AdMob account, then implement it in your app's code. You must complete all of these steps to start showing ads in this ad unit.

Instructions

  1. Sign in to your AdMob account at https://apps.admob.com.
  2. Click Apps in the sidebar.
  3. Select the name of the app that you're creating the ad unit for. If you can't see it in the list of recent apps, you can click Add app to add a new app or click All apps to search a list of all of the apps that you've added to AdMob.
  4. Click Ad units in the sidebar.
  5. Click Add ad unit.
  6. Click Select for the Interstitial ad format.
  7. Enter a name for this ad unit. Recommended: Include relevant information, such as ad format and location in your app to make it easier to identify later.
  8. (optional) Complete the advanced settings for this ad unit:
    • Ad type: Choose the ad type(s) allowed to be shown in this ad unit. You can choose any combination of ad types by ticking the boxes. Unticking all of the boxes will result in an error. You must choose at least one ad type for each ad unit. Suggestion: To try and help maximise revenue for this ad unit, we suggest ticking all of the boxes.
    • Frequency capping: Determines the number of times this ad unit can show an ad to the same user. You can choose not to set a limit, or you can limit ads for each user by the number shown per minute, hour or day.
    • eCPM floor: You can set an eCPM floor (also known as a minimum eCPM) for each ad unit you create. This instructs the AdMob Network not to serve ads to this ad unit with eCPM values below the minimum eCPM that you’ve set.
      1. Click the eCPM floor toggle to turn it on and enable eCPM floors for your ad unit.
      2. Enter a global eCPM value for the AdMob Network to use as a floor.
      This eCPM floor only applies to the AdMob Network. It doesn't apply to third-party ad networks and custom events configured as ad sources in a mediation group.
    • (optional) Country-specific floors: If you've enabled an eCPM floor in the previous step, you can click Add country-specific floors to add country-specific eCPM floors for this ad unit. Country-specific eCPM floors will override this ad unit’s global eCPM value only when ad requests originate from the selected country.
      1. Select a country for which you want to set a specific floor. It will be added to the list of selected countries. You can select whole regions, or expand each section to view the individual countries within a region.
      2. Click the Edit icon beside the country or region you selected and enter an eCPM floor value. 
      3. Click Set to save the eCPM value. 
      4. Repeat these steps for each country you select.
  9. Click Create ad unit.
  10. Follow the instructions in the Google Developers Get Started (Android, iOS) guide to implement this ad unit in your app code to start showing ads. You will need your app ID and ad unit ID during implementation.
    This ad unit won't show ads until you've completed this step. If you're not ready to implement the ad unit, you can click Email this to send the instructions by email or click Done to exit the page.
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