There are several online platforms offering copyright free or use-free works.
Always check the applicable conditions and disclaimer and what you are dealing with: are the works copyright free or are the works use-free?
It is mandatory from the point of view of academic integrity to always cite the source, if possible.
Some widely used sources are:
- Wikimedia Commons - a database of over 45 million freely available media files, such as videos, audio clips and images;
- Pixabay – a website with over a million freely available, high-resolution photos, illustrations, graphical images and videos;
- Creative Commons Search – a website designed specifically for searching for material subject to a Creative Commons license;
- Europeana Collections – a digital platform, partly financed by the EU, for sharing cultural heritage. The collection offers access to more than 50 million digitized items;
- Metropolitan Museum of Art – Since the start of 2017, the Met has made a multitude of public domain works available on its website on an open access basis;
- The British Library - via Flickr, this museum has published over a million images that may be used freely.