21 Things You Didn't Know You Could Do With Your Kindle
On the Kindle Voyage and Paperwhite, press two opposite corners of the screen at the same time to capture a screenshot. For the Kindle Touch, hold down the home button, then tap the screen. If you have the original Kindle, hold alt + shift + G.
To download the images, you need to plug the Kindle into your personal computer via USB. The screenshots are exported as .png files.