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Rendering Performance

Explore how browsers render web pages through the critical rendering path and learn to optimize parsing, style, layout, paint, and composite stages. Understand how minimizing layout and paint changes improves performance, especially for animations and user interactions, helping you build faster and more responsive web applications.

Introduction

The Critical Rendering Path is just the steps that browsers take to convert the HTML, CSS, and JavaScript into what a web page looks like. The browser won’t always necessarily touch every part of the pipeline on every frame. Visual changes are made with JavaScript, CSS, or Web Animations. There are three ways the pipeline normally plays out for a given frame when you make ...