Save webpages as images with screen recorder extension: Screengrab
The screen recorder extension Screengrab helps you to save entire webpages as images. All you need to do is Just right-click on the page you want to grab and look in the “Screengrab” menu.
It will capture what you can see in the window, the entire page, just a selection, a particular frame… basically it saves webpages as images – either to a file, or to the clipboard, or upload to internet.