I really think you all should start making some of these as answers so Paul and Lieve get their points too!

Hi!  I am also new to Captivate.  Yes, there are images, icons, and other goodies in Captivate’s Asset Library.   Also,  there are some royalty free images available for download through Pixabay and Unsplash.   The images are also free for commercial use as well.

Terminology problem. Can you please give some examples?

Images for a cptx file can be obtained or created.  Captivate comes with an Asset Library where you find some images. You also have access to part of the eLearning Brother’s library. There are sites where you can find images for free, and high quality images can be purchased from other sites like Adobe Stock which you can access directly from Captivate as well.

Of course you can use your images like photos or images created in other applications.