Then I set about finding some images I liked. I’d seen some biological line drawings by a man called Ernst Haeckel a while ago, and thought they would work well as screensaver images as they look a lot like images in the default Kindle screensavers.
I downloaded the images I wanted, then followed the instructions from How To Geek (first link above) on converting images to a suitable format for the Kindle. I updated my version of GIMP while I was editing the images and found it’s got a really simple batch image editing function (in GIMP > File > Batch Image Manipulation). You can also save the batch edit profile to use again at a later date.
So here’s my batch image manipulation profile for GIMP (right-click to save file):
- Resize image so that it is 800 pixels high (preserving aspect ratio of image)
- Convert to grayscale
- Convert image to PNG format
- Save edited image with the original filename suffixed by ‘_edit’