Once you’ve created a Google Adsense Ad Unit you need to place the code somewhere on your website. The easiest place to do this is in a sidebar, header or footer widget. Depending on what theme you are using you’ll have at least one of these that you can use. This blog post takes you through the steps to add a Google Adsense Ad Unit to a widget. We’re going to use a sidebar widget as it’s the most common one.
1. Get your Google Adsense Unit Code
Log in to your Adsense account and go to the Ads section. Look for Ad units.
You will see a list of your ad units here. Find the one that you want to add to your website and use the ‘Get Code’ link to see the code fragment you need to use.
Now copy the contents of that box.
2. Add A New WordPress Widget
Go to your WordPress dashboard and look under Appearance -> Widgets to see what widget areas are available for you to use.
Alternatively you can go to your theme customiser and edit the widgets on the front end.
Whichever way you access the widgets, you want to add a new custom html widget and copy the code fragment into it.
Drag the Custom HTML box into the sidebar section.
Copy the code fragment into the box – it’s optional to give it a title.
Make sure that you save your changes as you go along.
3. View the resulting Ad
Now go to a page on your website where that sidebar displays eg. a blog post, and you should see an ad being displayed within the next hour. If this is your first ever ad unit it may take a bit of time before an appropriate one is found for your website.
At this point the ad unit is now active. If it’s a new add then the status will change from new to active after several days. You can view the performance of your advertisements in the Google Adsense Dashboard and also go back and edit them to make changes.