Web browsers: more than just their underlying codeĪs discussed above, most popular browsers share their underlying code. Brave and other Chromium-based browsers use the V8 Javascript engine. Every browser uses some form of Javascript engine, but the engine can vary. For example, when you fill in a Web form or click a button on a page, Javascript works in the background to make those interactions happen. Javascript determines a user’s interactions with the webpage. And some browsers handle particular on-page elements better than others. This loading order can affect browsing speed-page elements load at different rates, and in different order, on different browsers. These engines “drive” the browser through the webpage-they determine how, and in what order, the page’s different elements are processed. Mozilla Firefox uses Gecko, while iOS browsers use Webkit. Chromium-based browsers like Brave share the Blink browser engine. Some browsers have their own engine others might share one, and then make custom optimizations. Layout or browser engineĮvery browser has an “engine.” This is the core software codebase that runs the browser. Internally, a number of factors within the browser itself can also affect browsing speed, the two most significant being layout / browser engine, and Javascript engine. Let’s start by looking at the external factors (those outside the browser itself) and internal ones (those within the browser) affecting browser speed.Įxternally, Internet bandwidth (the service from your Internet service provider), cell signal, the number of devices on a network and what those devices are doing, computer processing speed, the make and age of your device’s operating system, and more can all contribute to a fast (or slow) browsing experience. But a lot has to happen behind the scenes to meet these expectations. We expect our browsers to load pages, download content, and stream videos with lightning speed. Understanding the factors that affect browser speed
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