You can take a full page screenshot on Google Chrome using its built-in tool, which can be accessed by pressing `command + option + I` (on Mac) or `Ctrl + Shift + I` (on Windows), then typing "screenshot" in the search bar and selecting "Capture full size screenshot." This method is more efficient than manually scrolling down a page and taking multiple screenshots. The tool works best on text-heavy pages but may not work as expected for web apps. Additionally, you can customize the size of your screenshot by opening the developer tools, clicking the device toolbar, entering the custom width and height, and then selecting "Capture full size screenshot." This method is available in other popular browsers such as Arc, Brave, Edge, Firefox, and Safari, with similar steps for each browser.