About the AdSense ads crawler

A crawler, also known as a spider or a bot, is the software Google uses to process and index the content of webpages. The AdSense crawler, called Mediapartners-Google, visits your site to determine its content in order to provide relevant ads.

Here are some important facts to know about the AdSense crawler:

• The crawler report is updated weekly.

  The crawl is performed automatically and we're not able to accommodate requests for more frequent crawling.

• The AdSense crawler is different from the Google crawler.

  The two crawlers are separate, but they do share a cache. We do this to avoid both crawlers requesting the same pages, thereby helping publishers conserve their bandwidth. Similarly, the Search Console crawler is separate.

  Note: AdSense also uses a crawler called Google-Display-Ads-Bot to verify your site when you add a site to AdSense.
• Resolving AdSense crawl issues won't resolve issues with the Google crawl.

  Resolving the issues listed on your Crawler access page has no impact on your placement within Google search results. For more information on your site's ranking on Google, review our entry on getting included in Google search results.

• The crawler indexes by URL.

  Our crawler will access site.com and www.site.com separately. However, our crawler won't count site.com and site.com/#anchor separately.

• The crawler won't access pages or directories prohibited by a robots.txt file.

  The Google, AdSense Mediapartners-Google, and Google-Display-Ads-Bot crawlers honor your robots.txt file. If your robot.txt file prohibits access to certain pages or directories, then they will not be crawled.

  Note: If you’re serving ads on pages that are being roboted out with the line User-agent: *, then the AdSense crawler will still crawl these pages. To prevent the AdSense crawler from accessing your pages, you need to include the following in your robots.txt file:

  User-agent: Mediapartners-Google

  User-agent: Google-Display-Ads-Bot

• The crawler attempts to access URLs only where our ad tags are implemented.

  Only pages displaying Google ads should be sending requests to our systems and being crawled.

• The crawler attempts to access pages that redirect.

  When you have "original pages" that redirect to other pages, our crawler must access the original pages to determine that a redirect is in place. Therefore, our crawler's visit to the original pages appears in your access logs.

• There is no control over how often the crawler will index your site content.

  At this time, we have no control over re-crawling sites. Crawling is done automatically by our bots. If you make changes to a page, it may take up to 1 or 2 weeks before the changes are reflected in our index.