Backlink Blindspots: The State of Robots.txt
Posted by rjonesx. Here at Moz we have committed to making Link Explorer as similar to Google as possible, specifically in the way we crawl the web. I have discussed in previous articles some metrics we use to ascertain that performance , but today I wanted to spend a little bit of time talking about the impact of robots.txt and crawling the web. Most of you are familiar with robots.txt as the method by which webmasters can direct Google and other bots to visit only certain pages on the site. Webmasters can be selective, allowing certain bots to visit some pages while denying other bots access to the same. This presents a problem for companies like Moz, Majestic , and Ahrefs : we try to crawl the web like Google, but certain websites deny access to our bots while allowing that access to Googlebot. So, why exactly does this matter? Why does it matter? As we crawl the web, if a bot encounters a robots.txt file, they're blocked from crawling specific content. We can see the lin...
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