Common Sense Education - Creativity, Copyright and Fair use.
From GCFLearnFree.org - A worldwide leader in FREE, online education.
Why it might be better to search for "Copyright Free"/"Public Domain" images instead of "Royalty Free" images.
Creative Commons - Browse 600+ million images in the Creative Commons' database of freely reusable content.
The United States Copyright Office - What is Public Domain?
Note: As you explore these resources for your projects, understand that there is a difference between royalty-free and copyright-free. Royalty-free does not always mean free to use.
Also, some websites will require you to create a free account. It's always a good idea to explore a website's "About" page for more information.
Clipart Library - A free clipart library.
Clker - Free clipart to use for anything.
Noun Project - Icons and photos for everything.
Pixabay - Pixabay's thousands of royalty free clip art images to use in projects and presentations.
WPClipart - High-quality, public-domain clip art and photography.
Creative Commons - Creative Commons licenses give everyone from individual creators to large institutions a standardized way to grant the public permission to use their creative work under copyright law.
Flickr Creative Commons - Flickr users who have chosen to offer their work under a Creative Commons license.
Freesvg.org - Free Free SVG vector files. Download and upload SVG images with CC0 public domain licenses.
Library of Congress - Free to Use and Reuse Sets - Millions of items from the Library of Congress, including books, newspapers, manuscripts, prints and photos, maps, musical scores, films, sound recordings and more, that are free to use and reuse.
Pexels - Pexels' best free stock photos, royalty free images & videos shared by creators.
Pixabay - Over 2.7 million+ high quality stock images, videos and music shared by Pixabay's talented community.
Smithsonian Open Access - From the website....Welcome to Smithsonian Open Access, where you can download, share, and reuse millions of the Smithsonian’s images—right now, without asking. With new platforms and tools, you have easier access to more than 4.4 million 2D and 3D digital items from our collections—with many more to come. This includes images and data from across the Smithsonian’s 19 museums, nine research centers, libraries, archives, and the National Zoo.
Unsplash - The internet’s source of freely usable images.
Wikimedia Commons - Wikimedia Commons is a media file repository making available public domain and freely licensed educational media content (images, sound and video clips) to everyone.
Creative Commons - An extensive library of more than 600 million creative works (free stock photos, images, and audio) available for free use.
Free Music Archive - A resource for royalty-free and "free to download" music.
Free Stock Music - Royalty-free music for YouTube videos or projects (blog, vlog, podcast, social network, etc.). Include the attribution in your credits.
Library of Congress - Free to Use and Reuse Sets - Millions of items from the Library of Congress, including books, newspapers, manuscripts, prints and photos, maps, musical scores, films, sound recordings and more, that are free to use and reuse.
YouTube Audio Library - Royalty-free audio that you can filter based on genre and mood.
Coverr - Beautiful free stock video footage
Pexels - Pexels' free education video clips.
Pixabay - Over 2.7 million+ high quality stock images, videos and music shared by Pixabay's talented community.
Videezy - Free HD Stock Footage and 4K Videos.
Videvo - 500,000+ stock footage clips, motion graphics, Premiere Pro templates, After Effects templates, royalty free music and sound effects.
Vidsplay - Royalty free stock video footage clips in high definition.
U.S. Copyright Office:
Learning Engine Video Series (more information about Copyright, Public Domain, and Fair Use)
Library of Congress:
Web resources for public domain images (11/2023)
Best free music download sites (12/2021)
12 of the Best Free Stock Video Websites for Great Footage (8/2021)