Chrome DevTools is a set of web development tools built directly into the Google Chrome browser. It allows developers to inspect and edit HTML and CSS, debug JavaScript, and analyze website performance. With features like the Elements panel, Console, and Network tab, users can easily identify issues and optimize their web applications. These tools are accessible by right-clicking on a webpage and selecting "Inspect" or by pressing F12. Chrome DevTools supports various workflows, making it easier for developers to test changes in real-time and improve the overall user experience on their websites.