This can land you in tricky waters with potential high costs payable to the original owners of any images used without authorisation.
We recommend the following three sources for FREE and premium high quality copyright exempt images:
Freerange Stock was formed with the goal to provide quality stock photos for commercial and non-commercial use. For free. We feel that free stock photos can be good photos. Freerange is an advertising revenue supported photographic community – photographers get paid when users click on the ads that appear next to their submissions.
Free Digital Photos
Download free and premium stock photos and illustrations for websites, advertising materials, newspapers, magazines, ebooks, book covers and pages, music artwork, software applications and much more. All our free images are of high quality, produced by our community of professional stock photographers and digital illustrators.
The Depositphotos photobank, founded in 2009, is the fastest-growing photobank in the world. They serve customers from over 192 countries, giving them 24/7 support in 20 languages. As a creative content marketplace, Depositphotos allows anyone to buy and sell high-quality stock photos, vector images, and videos.
Important: Please ensure you follow any guidance from these providers on crediting images that you use!