Crawl rate drop
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Hi Guys,
I have a crawl rate drop in webmastertools and can't figure out way. In the last month I removed a lot o duplicate pages that we don't need anymore, there were at least 1.5 million pages. Can this be a motive?
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Hi there.
Of course it can! The crawl rate is in pages per day, so if you remove pages (especially 1.5 million), there won't be as much to crawl

Also it can happen, if you have the same static pages and the crawl bot has crawled them all. Google doesn't crawl all pages all the time, they have limited resources. So, if you have launched or updated website recently and now not really updating it, you can see the change in crawl rate.
However, you can change crawl rate for 90 days, if you need them to crawl your website constantly (usually good for websites in process of reconstruction). Here:Â https://support.google.com/webmasters/answer/48620?hl=en