Free Stock Images

What regulations govern the use of images in the PHIL?
Answer: Images are either “Public Domain” (free use) or “Copyright Protected” (restricted, obtain permission before use)

• Most of the images in the collection are in the public domain and are thus free of any copyright restrictions. If you look directly beneath the image you will see a fair use statement that tells you if the image is public domain or copyright protected.
• Permission is not required for public domain images, but we do ask that you credit the original institution and contributor, when known, whenever the image is used in any publicly distributed media.
• If the image is copyright protected, you will have to contact the content provider to obtain usage permission. PHIL does not have the authority to grant usage for any copyrighted images in the library. If you have difficulty contacting a content provider, we may be able to help, but we cannot act on their behalf.

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Are CDC materials on the web copyrighted?

CDC materials available on the web site are in the public domain (free of copyright restrictions) unless otherwise noted. The CDC logo is NOT in the public domain and may not be used without a trademark licensing agreement.

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Attribution and Rights for Government Works: Works produced by the U.S. government are not subject to copyright protection in the United States. Any such works found on National Library of Medicine (NLM) Web sites may be freely used or reproduced without permission in the U.S. Please acknowledge NLM as the source of the information by including the phrase “Courtesy of the U.S. National Library of Medicine” or “Source: U.S. National Library of Medicine.”

Copyright Protections for Non-Government Works: When using NLM Web sites, you may encounter documents, illustrations, photographs, or other content contributed by or licensed from private individuals, companies, or organizations that may be protected by U.S. and international copyright laws. You can sometimes tell if content is copyrighted if it has the copyright symbol, the name of the copyright holder, or the statement “All rights reserved.” However, a copyright notice is not required by law and therefore not all copyrighted content is necessarily marked in this way.

Transmission or reproduction of copyrighted items (beyond that allowed by fair use as defined in the U.S. copyright laws) requires the written permission of the copyright holders.

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What is allowed?

We tried to keep the Pexels License as simple as possible. Keep reading to find out more.

• All photos on Pexels are free to use.
• Attribution is not required. Giving credit to the photographer or Pexels is not necessary but always appreciated.
• You can modify the photos. Be creative and edit the photos as you like.

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Simplified Pixabay License

Our license empowers creators and protects our community. We want to keep it as simple as possible. Here is an overview of what Pixabay content can and can’t be used for.

What is allowed?

• All content on Pixabay can be used for free for commercial and noncommercial use across print and digital, except in the cases mentioned in “What is not allowed”.
• Attribution is not required. Giving credit to the contributor or Pixabay is not necessary but is always appreciated by our community.
• You can make modifications to content from Pixabay.

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License

All photos published on Unsplash can be used for free. You can use them for commercial and noncommercial purposes. You do not need to ask permission from or provide credit to the photographer or Unsplash, although it is appreciated when possible.

More precisely, Unsplash grants you an irrevocable, nonexclusive, worldwide copyright license to download, copy, modify, distribute, perform, and use photos from Unsplash for free, including for commercial purposes, without permission from or attributing the photographer or Unsplash. This license does not include the right to compile photos from Unsplash to replicate a similar or competing service.

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