Google Images
- Under 'Quick Settings' (the gear icon), go to 'Advanced Search' to filter by 'Usage Rights' to only show search results published under certain copyright licenses. Note: the copyright licence limiter is not fool-proof. Verify the copyright/licence terms on the relevant website before you re-use any of its images.
Unsplash
- Unsplash has a photograph collection of more than 500,000 images. All unlocked images are free to use, even for commercial purposes.
Creative Commons Search
- Identifies Creative Commons image and media sites, and allows you to search them one at a time. Click on the service you want - e.g., Europeana -before entering your search terms. For more details on permitted uses see 'Creative Commons Attribution 4.0 International license' at the bottom of the front page.
Encyclopedia of Life
- Global access to knowledge about life on Earth. Each image is under a different license and most are published under Creative Commons licenses. See the Copyright & Linking Policies glossary for more info.
National Gallery of Art Images
- Over 50,000 open access digital images from the US National Gallery of Art, with many famous works included. NGA's Open Access Policy encourages wide use and provides details on permissions.
NounProject
- A collection of icons, the Noun Project strives to build a global visual language that everyone can understand. Icons have public domain or Creative Commons licenses; see Legal for more details. User can also pay a fee to use the icon without attribution.
Pixabay
- Over 4.4 million crowd-sourced royalty-free images, as well as audio, video, and other media. 'Royalty-free' content under the Pixabay Content License is free to use, modify, and adapt, and does not require attribution; review Content License on each item.
US Fish and Wildlife Service National Digital Library
- Most of the images in this searchable database state 'public domain' in the Rights field on each image; those that are not specify permitted uses and attribution.
