How Does A Browser Works?? A browser works in steps: you request a page, the browser finds the server via DNS, sends an HTTP request for files (HTML, CSS, JS), receives them, builds a DOM tree from HTML, styles it with CSS, executes JavaScript for interactivity, then renders (paints) the final visual page on screen, handling layers and compositing for smooth display. 1- Request & Networking: i- User Input: You type a URL (like google.com) or click a link. ii- DNS Lookup: Browser checks its cache