This is an impossible search! Every time I search for "show urls not indexed" and many other variations... All I get are results of people complaining about none of their pages being indexed. I don't care about that! I want a report of what urls are being indexed! Can no one answer this?
You don't even need GWT for this. Simply go to Google and enter "site:example.com" without the quotation marks and subsiting example.com with your domain name. That will display the 12 pages that Google has indexed and you should be able to figure out which one of your 13 urls are is missing from the results.
Please remember that sitemaps are simply another way to help search engines better discover your website. Sitemaps DO NOT guarantee the search engines will index your content. To increase the probability that the search engines will index your urls you should make sure each url has significant unique and useful content plus a significant amount of internal and external link popularity.
If your pages are deemed to be too similar to each other or too similar to pages already published on another website the search engines will likely not index them. If your pages have little or no link popularity the search engines will take that as a sign the pages are not very important. If the pages were valuable then more people would be linking to them.
It may be more beneficial to you if focus your efforts on making sure your content is unique and useful. The higher quality the content is the higher the chances it has to attract links and people will be more likely to link to you when you ask for links.
Wow thanks for the answer. And as usuall the most obvious answer.
I definitely have the "unique" factor down, and there are plenty of quality external links to these sites (vacation related, so plenty of travel sites link to them). They also usually rank if not 1st, very high in SERPs.
I had this question because I was putting together a robots.txt and It made me question the fact of if I even wanted these un-indexed pages to be indexed at all? Do I want to remove them? Then I thought Well I don't even know what the pages are. But now I do. Thanks!