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User experience, conversion rates, search engine rankings, and overall website performance are directly affected by site speed.

Page Load Time

Page load time (site speed or website speed) refers to the duration it takes for a web page to fully load and render its content on a user's device. It is the time elapsed from the initial request made by the user to the moment when the page becomes entirely visible and interactive.

This metric is critical for evaluating a website's performance, as it directly impacts user experience, search engine rankings, and conversion rates, as we already explained in site speed docs.

There are several factors that contribute to page load time, including:

  1. Server Response Time. The time is taken by the server to process the request and start sending the data.
  2. Network Latency. The time required for data to travel from the server to the user's device and vice versa.
  3. Resource Size. The total size of all resources, such as HTML, CSS, JavaScript, and media files that need to be downloaded to display the page.
  4. Browser Rendering. The time is taken by the browser to parse, process, and render the received data on the user's screen.

To ensure optimal performance, web developers and administrators should prioritize monitoring and optimizing page load times, leveraging best frontend performance practices such as efficient resource handling, caching, and content delivery optimization.

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