When referring to the critical rendering path in site performance, a critical resource is:

    When referring to the critical rendering path in site performance, a critical resource is:

    • any resource that returns 404
    • a resource that could block initial display of the page
    • any resource that must be loaded
    • a resource that takes more than 500ms to load

    Correct answer is:

    • a resource that could block initial display of the page

    Explanation: A critical resource is a resource that could block initial rendering of the page. The fewer of these resources, the less work for the browser, the CPU, and other resources.

    Read more here: https://support.google.com/partners/answer/7336426

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