HOW BROWSERS WORK

Summary from the TLDR Dev newsletter

This interactive guide provides a simplified mental model of how browsers function, using small, interactive examples. It explains how browsers process URLs, convert them into HTTP requests, and resolve domain names into IP addresses using DNS. A reliable TCP connection is established to the server for sending HTTP requests and receiving responses. Finally, the browser parses HTML to build the DOM tree and render the page through layout, paint, and composite stages.