How to Set Google Ads to Image Only

Set Image Ad for New Ad Unit
1. Navigate to google.com/adsense. Login to your Adsense account using your standard Google account username and password.
2. Click on the 'Adsense Setup' tab and choose 'Adsense for Content.'

3. Click on the 'Ad Unit' radio button and select 'Image ads only' in the drop-down menu.
4. Click 'Continue' to continue generating your advertising unit according to the guided wizard.
Set Image Ad for Existing Ad Unit
5. After logging in your Google AdSense account, click the 'AdSense Setup' tab.
6. Click the 'Manage Ads' sub-tab.
7. Click 'Edit Ad Settings' for the desired ad unit.
8. Select 'Image ads only' in the 'Format' drop-down menu.
9. Click 'Save Settings' to save the ad unit.