Free Image Websites
Unsplash - https://unsplash.com
Pexels - https://www.pexels.com
Stockio - https://www.stockio.com
Reshot - https://www.reshot.com
PikWizard - https://pikwizard.com
Pixabay - https://pixabay.com
Morguefile - https://morguefile.com
Openclipart - https://openclipart.org
Photos for Class - http://www.photosforclass.com
Pics4Learning - http://www.pics4learning.com
Flickr Advanced Search - http://flickr.com/search/advanced
Google Images Advanced Search - https://www.google.com/advanced_image_search
Wikimedia Commons - https://commons.wikimedia.org/wiki/Main_Page
Free Image Add-ons for Docs
Full Deck for Google Docs (Unsplash) - Docs Add-on link
Pixabay Free Images - Docs Add-on link
Insert icons for Docs - Docs Add-on link
Free Image Add-ons for Slides
Unsplash - Slides Add-on link
Insert icons for Slides - Slides Add-on link