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  • Top Sites

    As a data-driven company, we've become well-known for our Top Ranked Sites list, which by default, ranks top U.S. websites by monthly visitors. Switch countries to get a different perspective.

    For sites that use Quantcast Measure, you can click through for an in-depth view of their audience data and insights.

    Data Insights

    Audience data drives our storytelling as well. The posts below demonstrate what you can learn when you take a closer look at your audience.

    Harness the real-time pulse of the open Internet

    Since 2006, we’ve been building Q - the world’s largest AI-driven audience behavior platform for the open Internet that today directly quantifies over 100 million mobile and web destinations. Comprised of Internet-scale 1st party data, self-adapting predictive models and integrated AI optimization, Q’s collection of machine learning technologies continually interprets the consumer behavior graph giving brands a real-time pulse of the Internet.


    million mobile and web destinations use Quantcast to understand their audience

    Look Up Public Audience Data

    Explore Recently Quantified Sites

    10 Yelp.com 70,313,504
    13 Buzzfeed.com 56,426,004
    18 Wikia.com 42,644,684
    24 Giphy.com 32,424,136
    25 Quizlet.com 31,588,318