Google Chrome has a hidden feature tucked away inside Developer Tools that lets you take full-sized screenshots of any web page. This feature captures the entirety of a page, similar to a scrolling screenshot, without the use of a third-party extension.
How to Take a Full-Sized Screenshot in Chrome
To get started, open Chrome and head to the web page you want to capture. Once there, click the three dots, point to “More Tools,” then click on “Developer Tools.” Alternatively, you can press Ctrl+Shift+I on Windows or Command+Shift+I on Mac to open the Developer Tools pane.
In the top right corner of the pane, click the three dots icon, then click “Run Command.” Alternatively, press Ctrl+Shift+P on Windows and Command+Shift+P on Mac.
In the command line, type “Screenshot,” then click “Capture full-size screenshot” from the list of commands available.
Note: This feature is ideal on websites with text-based content opposed to web apps, as it could potentially only capture the viewable screen.
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Source : How to Take Full Page Screenshots in Google Chrome Without Using an Extension