Tips to improve Google Adsense click-through rate

How to improve the click-through rate of Google Adsense has always been a question I have been thinking about and trying.
1. Ad format <br /> At first, we mainly optimized the ad format, and finally found that 336*280 had the highest click-through rate.
2. Advertisement color <br /> Next, optimize the ad color. Different colors can produce different effects. In general, the background should be the same as the page background, and you can try to match the text and links.
3. Template selection <br /> Finally, I found that the template is very important and ranks first.
When I first started using the 11k template, the click-through rate was around 1%, but after I changed to another template, the click-through rate has been around 0.4%, no matter how I optimized it.
Finally, I had to switch back to the original template and optimize it.
Therefore, it is important to find a suitable template.