Google AdSense is one of the easiest and most popular monetization methods for bloggers, but simply adding some Google AdSense ad units to your blog doesn’t mean the money will start pouring in. For most bloggers, earnings are negligible until they start to consistently get 500-1,000 visitors to their blogs each day. However, there are steps that you can take to increase your Google AdSense earnings and tests you can perform to ensure you’re not missing out on money that you could be earning. Following are 10 tests that you can perform to maximize your Google AdSense earnings.

1.  Ad Size Testing

There are a variety of ad sizes that you can choose to display on your blog. The ad sizes recommended by Google AdSense (you’ll see these when you’re logged into your account and creating a new ad unit) are the units that typically perform the best because they’re most popular with advertisers. You can test any and all ad sizes on your blog to determine which sizes perform the best.
Also Read- Find High Paying Keywords for Google Adsense

2.  Ad Placement Testing

Testing ad placement is best done when only one Google AdSense unit is displayed on a blog page at a time. For example, test the ad unit in various locations on your blog’s home page.
Also Read- How To Start a Google AdSense Account and Make Money Blogging

3.  Ad Type Testing

Google AdSense offers a variety of ad types, and you might be surprised to learn that a text link ad performs better on your blog than a display ad (i.e., an image or rich-media ad) or vice versa. Test and learn which drives the most revenue for you.

4.  Text Link Ad Colours Testing

You can customize the colours of the title, body, and link within the text link ad units that appear on your blog through Google AdSense. Test one element at a time to get the most accurate results.

5.  Text Link Ad Typefaces Testing

Google AdSense offers a number of different typefaces. Choose a typeface that matches the tone of your blog versus a typeface that is the total opposite of your blog. See which typefaces generate the most clicks.

6.  Text Link Ad Font Sizes Testing

You can choose the font size for your Google AdSense ad units. Play around with smaller and larger font sizes to determine which drives greater revenue for your blog.

7.  Ad Borders and Backgrounds Testing

Borders and backgrounds are very important for text link ads because they can help ad units stand out on your blog. But how much should the ads stand out before they become obtrusive and damage the user experience on your blog? Testing is the only way to find the perfect balance.

8.  Text Ads vs. Display Ads in Specific Positions Testing

You can conduct A/B split tests of all variables on your blog, but be sure to only test one variable at a time to get accurate results. When testing text link ads vs. display ads in a specific position on your blog, a 50/50 random split test where half of your visitors are shown one a text link ad and the other half see a display ad will yield the most accurate results. You can create A/B split tests of specific ad units within your Google AdSense account. The Inside AdSense blog provides details about how you can set up your own split tests.

9.  Page-Specific Testing

If you display Google AdSense units on specific pages within your blog (rather than site wide), then you should test each page separately. What works on one page might not work on another.

10.  Blog Content Testing

Google AdSense contextual ads use the content on the pages of your blog (as well as the browsing history of individual visitors) to display relevant ads. You can analyse and test your content to learn which content topics, styles, and formats generate the most Google AdSense revenue by linking your AdSense account to your Google Analytics account. The Inside AdSense blog provides an overview of how this works.