Official Google Webmaster Central Blog: Behold Google index secrets, revealed!

Webmaster Central Blog

Official news on crawling and indexing sites for the Google index

Behold Google index secrets, revealed!

火曜日, 7月 24, 2012

Webmaster level: All

Since Googlebot was born, webmasters around the world have been asking one question: Google, oh, Google, are my pages in the index? Now is the time to answer that question using the new Index Status feature in Webmaster Tools. Whether one or one million, Index Status will show you how many pages from your site have been included in Google’s index.

Index Status is under the Health menu. After clicking on it you’ll see a graph like the following:

It shows how many pages are currently indexed. The legend shows the latest count and the graph shows up to one year of data.

If you see a steadily increasing number of indexed pages, congratulations! This should be enough to confirm that new content on your site is being discovered, crawled and indexed by Google.

However, some of you may find issues that require looking a little bit deeper. That’s why we added an Advanced tab to the feature. You can access it by clicking on the button at the top, and it will look like this:

The advanced section will show not only totals of indexed pages, but also the cumulative number of pages crawled, the number of pages that we know about which are not crawled because they are blocked by robots.txt, and also the number of pages that were not selected for inclusion in our results.

Notice that the counts are always totals. So, for example, if on June 17th the count for indexed pages is 92, that means that there are a total of 92 pages indexed at this point in time, not that 92 pages were added to the index on that day only. In particular for sites with a long history, the count of pages crawled may be very big in comparison with the number of pages indexed.

All this data can be used to identify and debug a variety of indexing-related problems. For example, if some of your content doesn’t appear any more on Google and you notice that the graph of pages indexed has a sudden drop, that may be an indication that you introduced a site-wide error when using meta=”noindex” and now Google isn’t including your content in search results.

Another example: if you change the URL structure of your site and don’t follow our recommendations for moving your site, you may see a jump in the count of “Not selected”. Fixing the redirects or rel=”canonical” tags should help get better indexing coverage.

We hope that Index Status will bring more transparency into Google’s index selection process and help you identify and fix indexing problems with your sites. And if you have questions, don’t hesitate to ask in our Help Forum.

Posted by Kristen Dwan, Victoria Shan and Javier Tordable, Webmaster Tools Team