7 Website Performance Metrics You Need to Keep Track Of

Website performance is crucial to the success of any online business. In today’s competitive market, a slow website can mean the difference between a sale and a lost customer. That’s why it’s important to measure the performance of your website and identify areas that need improvement.

There are seven essential website performance metrics you should measure:

  1. Load Time

The load time is the time it takes for your website to completely load in the browser. This is one of the most important performance metrics because it directly impacts the user experience. A slow-loading website will frustrate visitors and cause them to leave.

  1. Time to First Byte

Time to first byte (TTFB) is the time it takes for your server to respond to a request from a browser. A slow TTFB can be caused by several factors, including a slow server, poor network connectivity, and inefficient code. A fast TTFB is important for a good user experience, as it ensures that your website loads quickly.

  1. First Contentful Paint

First contentful paint (FCP) is the time it takes for the first content on your page to load. This is generally the time it takes for your HTML to load. A slow FCP can be caused by a number of factors, including large images, inefficient code, and a slow server.

  1. DOM Load Time

The Document Object Model (DOM) is the structure of an HTML document. It is the way browsers interpret HTML code and turn it into a webpage. The DOM load time is the time it takes for the browser to load and render the DOM. This metric is important because it measures how long it takes for the webpage to become usable. A slow DOM load time can make a webpage unusable and frustrate users.

  1. Page Size

The page size is the total size of all the files that make up a web page. This includes the HTML, CSS, JavaScript, images, and other media. The page size is an important metric because it affects the load time of a page.

  1. Requests

The number of requests your website makes is important because it can impact your website’s load time. The more requests your website makes, the longer it will take to load. That’s why it’s important to minimize the number of requests your website makes. You can do this by optimizing your images and eliminating unnecessary plugins and third-party scripts.

  1. Errors

Errors can impact your website’s performance and cause it to load slowly. That’s why it’s important to monitor your website for errors and fix them as soon as possible. You can use tools like Google Analytics and Pingdom to monitor your website for errors.


It is essential to measure a variety of website performance metrics to ensure that your website is running optimally. These metrics include page load time, time to first byte, number of requests, page size, and others. By measuring these metrics, you can identify bottlenecks and make improvements to your website’s performance.

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