1. Wrap this code around your adsense code, it will increase your CTR by 2-3%.
<div style="display:block;float:left;margin: 5px 5px 5px 5px;">INSERT-ADSENSE-CODE-HERE</div>
<div style=”float: right;margin: 8px;”>INSERT-ADSENSE-CODE-HERE</div>
What this will do is to leave spaces around your adsense ads, do not overlook this method, as your CTR will increase. Visitors will keep looking at your adsense ads as your adsense ads are so prominent and special (with so much spaces around the ads) and they will eventually click on your adsense ads. Leaving space around your adsense ads, will make your adsense ads stand out and become more prominent to users, as a result your adsense CTR increases.
2. Use only Verdana or Arial font
Reason is because these 2 fonts are the best for users' eyes to read and also these 2 fonts are common that every devices can read it.
These 2 fonts Arial or Verdana for adsense ads? If you use arial for adsense ads, then change your content text to arial too. If you use verdana for adsense ads, then change your content text to verdana. This is the ultimate tip that everyone don't know.
3. Use 2-3 ads instead of one adsense ad
Why? how much CTR you expect if you only put one adsense ad unit on your webpage? Exactly, you will need at least 2-3 adsense ads instead of one adsense ad this will surely increase your CTR. After many tries and error I found out that the best number of adsense ads units you should put on your website is 2.
YES, 2 adsense ads unit per page. This is the best magic number that will gives you the high CTR and CPC. If your niche has less advertisers, it is best to put 2 adsense ads, as there might be not be enough advertisements on your adsense ads, if this happens, your CPC drops as Google will randomly place a low paying adsense ads on your adsense ads unit on your website.
4. Use only 160x600 or 336x280
These 2 adsense units has proven to be the top CTR adsense ads units, if you are not using these 2 adsense units you are losing out. These 2 adsense units also PROVEN to achieve CTR up to 20~30% everyday. Change your ads size to 160x600 or 336x280, I guarantee your CTR will increase.
5. Use text links instead of image links
You should only use text links on adsense ads unit instead or image links as these days, people can see easily identify your image ads is an ads, hence they will never click on it. On the other hand, text links get higher CTR as people always see the text links as part of the content.
If your website niche is a entertainment niche, I recommend you to try out using image ads on your website, as CTR has been proven to be higher using image ads on such niches (where people have fun with) eg. dating niches.
