Some URLs in the sitemap not indexed

[Mase]

Our company site has hundreds of thousands of pages. Yet no matter how big or small the total page count, I have found that the "URLs Indexed" in GWMT has never matched "URLS in Sitemap". When we were small and now that we have a LOT more pages, there is always a discrepancy of ~10% or so missing from the index.

It's difficult to know which pages are not indexed, but I have found some that I can verify are in the Sitemap.xml file but not at all in the index.  When I go to GWMT I can "Fetch and Render" missing pages fine - it's not as though it's blocked or inaccessible.

Any ideas on why this is? Is this type of discrepancy typical?

[Mase]

Thanks. Very helpful!

[Mase]

This is great to know that 10% is a good discrepancy. Hard to know otherwise.

That article about Screaming Frog is super helpful, thanks!

[danwebman]

I have never had a site with 100% crawled pages, sometimes Google will drop a page off for being too similar to another, not informative enough, canonical links set, redirects.

As Ryan says, don't just rely on Moz use Screaming Frog to get a good view of your site too, see if there are any errors. Also you can run the frog whenever you like, it's just a little more technical to understand.

Xenu oooh never heard of that one Ryan thanks!

Just looked into Xenu, Screaming frog does it all and some.

[Allie_Williams]

Hi Mase,

I've managed sites with with hundreds of thousands of pages too, and in my experience a discrepancy between what's offered up via the sitemaps and what gets indexed is typical (dare I say it, a 10% discrepancy seems pretty good!). Pages deeper in the site seem to suffer this fate more frequently than those with fewer subfolders, as do those with thin content.

I agree completely with Ryan's comment about Screaming Frog: it is an invaluable tool for site audits, in addition to lots of other useful site insights. You might find this article interesting to get a sense of the many ways you can use SF: http://www.seerinteractive.com/blog/screaming-frog-guide/

[RyanPurkey]

You're welcome. Definitely take a look at a crawler that gives you more insight, especially with a site as large as yours. Just note, no matter what you might never achieve an exact match between the pages you've submitted and the number indexed as Google can decide not to index a page for other reasons aside from the page's presence in a site map. Something useful for you as well would be to look at how many of your pages recieve visits in analytics. That will give you an idea of percentages on pages in the sitemap vs the index vs active.

[Mase]

I have not run the site through those tools you mentioned, I'm unfamiliar.

I am not, however, receiving any errors on those pages. And when I "Fetch and Render" in GWMT, they look and render fine without errors. I'm able to submit them to the index one-by-one.

Thanks for your response, Ryan.

[RyanPurkey]

Hi Mase. Are you getting errors on URLs you've submitted? Or ran other crawlers on your site like Xenu or ScreamingFrog to produce any possible errors? It's also good to know which pages might not have enough content to be indexed: filters, sorting views, etc.