If you plan to share your work beyond your classroom with an open license, then everything in your course, including the images in your textbook or slideshows, must be:

  1. Content that you created yourself that has an open license on it;
  2. Content that someone else created that has an open license on it (or is in the public domain).

Recommended places to search for openly licensed images

Pixabay

All of the impages you will find in this repository are in the public domain (CC0)

Unsplash

All of the impages you will find in this repository can be reused, modified, and shared for free; more information about the Unsplash license.

Flickr

Use license dropdown menu in search results to limit your search to images with Creative Commons licenses 

Example flickr advanced search with dropdown menu showing

Google image search

From your search results, click on "Images" and then find the usage rights dropdown under search tools

Example google images advanced search with dropdown menu showing

There will probably be two more steps before your image is ready to share widely:

  1. Add an attribution statement with the creator, title, link, and license information for the work;
  2. Add alt text to the image metadata so that the image can be understood by screen reader users.