The AdSense's Ad review center revamped earier this year and enables publishers to control the ads that appear on their site, just received an improvement based on the technology behind Google Image Search, to help find and review ads more efficiently.
Now, "you'll now be able to upload an image file from your computer to search for related image ads; you can then review and take action on the returned ads," informs Google.
This feature currently only returns image ads, but Google says, it plan to support more ad formats in the future.
For example, "you might want to find and block ads that contain the logo of a competitor. After you upload and search for the logo, we'll return image ads that contain the logo and which are eligible to appear on your pages," explains Google. (Note, you can upload images with a maximum file size of 2MB and a largest dimension of 1024 pixels.)
To try this feature, log in to your AdSense account and visit the 'Allow and block ads' tab.
Google recommend using filters sparingly, and only in cases where you'd prefer not to have the specific ad or advertiser appear on your pages.
"Please keep in mind that blocking ads isn't a revenue optimization tool; it can have a negative impact on your potential revenue since it reduces the competition between ads eligible to appear on your pages," google added.
Check out this Help Center artcile for detailed instructions.