Websites that offer royalty-free stock images of planet Earth include Shutterstock, Gimp-Savvy and CanStockPhoto. These images can be downloaded and used without paying regular royalties as long as the user adheres to the site's usage rules.
Shutterstock offers real, computer generated and handmade images of the planet Earth. These images are royalty-free stock photos that can be purchased with site credits. There are multiple resolutions and image formats available. Two different licenses, standard and enhanced, offer different tiers of rights for the use of each image, so users can get the image that works best for their needs.
Gimp-Savvy has free images that are in the public domain, and the NASA photos are completely free of copyright, but they have to be attributed to NASA. These images can be downloaded and used for educational or informational purposes, though if a person is obviously featured in the image, then his permission must be granted.
CanStockPhoto is mostly filled with created images of the Earth, and each image is available in multiple sizes. Larger sizes cost more to purchase, and there are also different price tiers of licensing users can choose from. The site also lets users save favorite images for quick access at a later date.