How to speed up your website step by step

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Minimize HTTP requests – Combining files like CSS and JavaScript reduces the number of requests to the server. Using sprites or inline styles will further speed up page load times.
Speed ​​measurement tools
There are a number of tools that offer detailed insights into how your website is performing, as well as recommendations for improvement. Below you will find descriptions of the most commonly used ones.


Google PageSpeed ​​Insights is a free tool from Google and is one of the most widely used measurement tools . It provides a detailed assessment of the speed of websites on both mobile and desktop . It analyzes key metrics such as loading speed, interactivity, and visual stability (such as LCP ). It offers specific recommendations, such as optimizing images, reducing file sizes, or removing blocking JavaScript. The results are presented as a score from 0 to 100 , which also makes it easier to understand the current state of the website and its weaknesses.


GTmetrix is ​​a popular tool that provides a comprehensive analysis Vietnam WhatsApp Number Data of the loading speed of a website and its individual elements. One of its main features is the so-called " waterfall analysis ", which visualizes which resources are loaded, in what order and how long they take to process. It also allows you to simulate different conditions, for example, testing the performance of a website from different geographical locations or at different connection speeds, especially 4G or LTE . Thanks to its clear interface, it identifies problem areas such as large images, unoptimized JavaScript or insufficient cache utilization.


WebPageTest allows you to test your website from different locations around the world , which is especially useful for sites with international traffic. In addition to standard metrics like loading speed, it also provides advanced metrics like Time to First Byte (TTFB), which measures how quickly a server responds to the first request. A detailed overview of how individual resources are loading and their impact on page performance allows for effective diagnosis and correction of problems.

Lighthouse is a powerful tool built right into Google Chrome . It provides comprehensive analysis of not only website speed, but also accessibility, SEO , and progressive web app (PWA) implementation . It can be easily launched directly from Chrome Developer Tools (F12 → Lighthouse tab). It offers practical recommendations , such as how to optimize fonts, remove blocking scripts, or improve accessibility for users with specific needs. Lighthouse is great for developers looking for a universal solution to check performance and other aspects of their website.