The simplest way to take a full page screen capture of your current browser window. Click on the extension in your browser bar, wait for the image version of the web page to be generated, and then it will open up in a new tab that you can save-as or just drag to your desktop. No bloat, just a simple way to turn a full web page into an image.
For best results ensure the zoom of the page you’re capturing is set to “Actual Size” from the “View” menu. Also, the only way to screenshot the entire page is to scroll to each visible part, so please be patient as it quickly assembles all the pieces.