Whatever you project or website you may be working on, adding a quality pictures can make your content look more professional. Finding photos and images shared under Creative Commons CC0 license, means that you can freely use them without giving credit to the creator. Best of all, it will cost you nothing. Here’s the list of websites where you can find lots of CC0 photos:-
Pixabay – Over 800,000 free stock photos, vectors and art illustrations. All CC0.
Pexels – Free stock photos. All CC0.
Unsplash – Free High Resolution Photos. All CC0.
Flickr – Public Domain Dedication (CC0) section
StockSnap – Beautiful Free Stock Photos. All CC0.
For further details on what CC0 is all about, you can checkout the Creative Commons website on the CC0 licensing.