Best AdSense Ad Placement For Highest CTR
AdSense Optimization June 7th, 2007The #1 question when it comes to AdSense is “What is the best placement and size for the highest click through rate (CTR)?”
I have been doing some testing on one of my AdSense sites for the last couple of months and trying to determine what achieved the best CTR.
Well, the results are in. Below you will find the results of my testing. I was actually quite surprised by the results.
Test #1: 336 X 280 - Set to the left of the text = 12% CTR
—–>Screenshot——–>
Test #2: 300 X 250 - Set to the left of the text = 14% CTR
—–>Screenshot——–>
Test 3: 300 X 250 - Set above the text = 20% CTR
—–>Screenshot——–>
So as you can see the best results were the 300 X 250 ad unit which was set above the text instead of put within the text.
I was surprised by the results because I would have thought that putting the AdSense unit inside the text would have achieved the highest click through rate.
That is why you test. I have almost doubled my income from this site by simply doing a little testing. I went from a 12% CTR all the way up to 20%.
Please understand that the point to take away here is not that you should use the format that I just showed had the highest CTR. Instead you should take away the importance of testing different ad units and different placement.
No two sites are the same and therefore every site will have a different optimal AdSense placement and format. But the only way to find that out is to TEST, TEST and then TEST some more. It is the quickest and easiest way to increase your AdSense income immediately.
You can easily do testing within your Google AdSense account by using the Ad Channels. Set up a different ad channel for each new ad unit and placement and test to see which has the best CTR. Then try another and see if you can beat the last result. Keep doing this until you reach the highest CTR.
Make sure to always test similar ads. For example, do not test a 336 X 280 ad unit at the top of a page against a 250 X 250 ad unit at the bottom of the page. The ad at the top of the page with get a better CTR than an ad at the bottom of the page because of its placement not because of the ad unit size. You need to compare apples to apples to get true results.
Go Start Testing!

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June 7th, 2007 at 7:52 pm
Good stuff! Good stuff! Well, I guess it all boils down to testing then! Thanks!
June 8th, 2007 at 2:06 pm
Thank you for sharing your test result Kurt.
I wonder if it may be better if you use 336×280 above the text? since you have no more texts beside the ads.
June 9th, 2007 at 3:57 am
[…] and Adsense - From the Horse’s MouthPositioning Your Adsense Ads - From ProBloggerBest Adsense Placement for Highest CTR - Adsense Master […]
June 13th, 2007 at 6:51 pm
Bobby, I will be testing the 336 X 280 soon. Stay tuned for the results.
June 15th, 2007 at 5:40 am
Thanks buddy, you insights probably just made me a #&!load of money.
August 29th, 2007 at 3:38 pm
My ctr is 10 percent or less if I am lucky. Does the ctr count all adds on page? if so maybe this is my problem.
December 19th, 2007 at 1:20 am
just wanna say thanks for this post! =)