Browse over 500 million images, available for reuse. You must cite every image you use in your work.
Featuring items from the Library's digital collections that are free to use and reuse.
Pixabay - Royalty Free Images and Stock photos
Create a free account to access this huge repository of fresh photos, illustrations, and vectors. You must cite every image you use in your work and provide attribution for each creator on the site.
You must cite all images in your work. Be aware "All images on Commons should be reusable but…
…each may have different requirements for crediting a photographer, linking a license, etc." (Wikimedia Commons)