Here are Some Simple but effective Tips and Tweaks which can improve your AdSense earning.
#1 Using Google DFP
Google DFP (Double Click For Publisher) is a free comprehensive ad server from Google through which you can sell your ad space available on your website. Using DFP you can serve your own ads or promotions to promote your own content or services. But the main benefit is that you can maximize your earnings by integrating DFP with AdSense.
You can also set a rule to serve Google ads only if CPM is higher than what you have chosen. If the CPM is less, then it will show in-house ads instead of Google ads. Now to show Google ads in your site, Google has to compete with an external ads which leads to higher revenue . Refer this tutorial How To Setup Google DFP to use DFP in your site.
#2 A/B Split Testing
If you are not sure that which Ad format will perform better for your site, then you can do A/b split Testing suggested by AdSense Team. By A/B split testing you can rotate two ad units of different formats, showing each 50% of the time. In this way you can decide which ad unit is better performing for you.
For A/B Split Testing first you have to make two custom Channels, one for each ad unit.
Now place your ads codes between this Java Script.
Here you have to replace “//your first ad unit code goes here” with your ad code.
#3 Make Use of Channels
You can create custom channels for tracking your each and individual ad performance in your site and thus provide deeper level of analysis. Thus you can evaluate which ad unit or even site perform better and which locations will enable you to realize your maximum earning potential.
More on Custom AdSense Channels.
#4 Use Targetable Ads
AdWords Advertiser can advertise on your website by two ways. First way is through contextual ads i.e. ads which are based on content of your website and second way is by Placement ads that you create through custom channels.
AdWords premium advertisers can target your website if you use targetable custom channels. As Premium advertiser pay more to Google that means you will earn more per click as AdSense publishers.
Here is a great video by Lisa
#5 Make use of Section targeting.
By using Section Targeting you can suggest your main Keywords or content to Google, so they can show more relevant ads in your site. By doing so you are emphasizing your main content and instructing Google to leave rest of your website section like comment and sidebar etc for serving better contextual ads.
To use Section Targeting add following codes before your main content.
<!– google_ad_section_start –>
Then add following code after end of your main content
<!– google_ad_section_end –>
#6 Competitive Ad Filter
You can filter competitive ads by blocking low paying ads to earn more revenue from AdSense. Although it is highly targeted to your content but there are chance of showing low performing ads.
#7 Implement AdSense for Search
It is recommended that you use AdSense for search as it has two benefits. First your users don’t have to leave your site for search and second you can also earn from it.
#8 Make Blending Ads
There are more chances of clicking ads on your site if you have blending ads. So to create blending ads you can make background color of your ad same as your website’s background color. When you blend your ads with your site then user will think it is a part of your website and not an ad. In this way your CTR increases and also your website also looks good if it shows blending ads.
If you opting to show Links ads on your website then better make background color same as you navigation menu so as to increase CTR.
#9 Size Matters
If you want to earn more from AdSense then display big banners. Best recommended ad sizes are 336×280, 300×280, 160×600,728×90. Don’t shy to show your ads and always display ads near the top of your pages.
#10 High Paying Niches
Niche is also responsible of your earning from AdSense. If you have website of low paying Niche, then your earning will be also low. So do some research before writing and write content which belongs to highest paying niches. I suggest to use free Google Keyword tool for research.
Related: 10 Ways to earn from Google AdSense.