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According to Google’s official blog, the world’s leading search engine identified 1 trillion (1,000,000,000,000) unique URLs on the web. As a matter of fact, Google found even more than 1 trillion individual links but many of the pages have multiple URL’s that has same content. After removing those duplicate content, Google identified 1 trillion unique URLs.

Google don’t index every one of those trillion pages, some of those pages are spam or auto-generated content. But Google proud to say that they have the most comprehensive index of any search engine. Google’s first index reached up to 26 million pages in 1998 and by 2000 it reached up to 1 billion. And the number of individual pages is growing rapidly per day.

According to Google’s official blog. “Today, Google downloads the web continuously, collecting updated page information and re-processing the entire web-link graph several times per day. This graph of one trillion URLs is similar to a map made up of one trillion intersections. So multiple times every day, we do the computational equivalent of fully exploring every intersection of every road in the United States. Except it’d be a map about 50,000 times as big as the U.S., with 50,000 times as many roads and intersections.”