We recommend using the following free CC0 stock image sites when you need a featured image. While CC0 images don’t need attribution, we recommend doing it anyway. Non-CC0 images must be attributed.
When attributing, use the following format and place the image credit in the image’s Caption field after uploading:
Image credit: Artist/StockSiteFree Stock Image Sites
Paid Stock Image Sites
We do not have access to paid stock image sites at this time.