Modem Studio CC0 database
This website shows a random collection of copyright free images collected by modem.studio. All of these images have been released under a Creative Commons Zero licence, making them free to use, share and modify for private as well as commercial use without the need for attribution (credits). They are as completely as possible in the public domain. These images have been carefully sourced from wikimedia.org, pixabay.com, flickr.com and pexels.com.
http://img.modem.studio/