Creative Commons licenses let you use someone's creative work — images, writing, music, video — under conditions they set, usually for free

A Creative Commons license is a legal agreement that sits between "all rights reserved" (the default copyright) and "public domain" (no restrictions at all). When a creator attaches a Creative Commons license to their work, they are saying: you can use this under these specific rules. The rules vary. Some licenses let you remix and sell. Others let you share but not change. Some require you to name the creator. Some forbid commercial use. You follow the rules the creator chose, or you do not use the work.

Creative Commons licenses exist because copyright law is automatic and restrictive. The moment someone writes a sentence or takes a photo, they own it completely. You cannot legally copy it, modify it, or share it without permission — even if the creator would have said yes. Creative Commons licenses remove that friction. A photographer can say "use my image however you want, just tell people it is mine" without negotiating with every person who wants to use it.

You will encounter Creative Commons licenses on stock photo sites, educational materials, open-source software documentation, music platforms, and Wikipedia. Understanding which license applies to a work tells you exactly what you can and cannot do with it.

Key Takeaways

  • Creative Commons licenses come in six standard types, each combining different rules about attribution, commercial use, modification, and sharing.
  • The creator chooses the license and posts it with the work; you must follow those specific rules or you cannot use the work legally.
  • Attribution (naming the creator) is required by five of the six licenses, and the exact format the creator wants is usually specified.
  • You can use Creative Commons work for free, but "free" does not mean "no rules" — you still have to respect the license conditions.
  • If you violate the license terms, you lose the right to use the work and may face copyright infringement claims.

The six Creative Commons license types and what each one allows

Creative Commons publishes six standard licenses. Each one is a combination of four possible restrictions: whether you must name the creator (Attribution), whether you can use it commercially (Commercial), whether you can change it (Derivative Works), and whether you must share any modified version under the same license (ShareAlike).

CC BY (Attribution) is the most permissive. You can copy, modify, distribute, and sell the work. Your only obligation is to credit the creator. This is common in academic writing and educational materials.

CC BY-SA (Attribution-ShareAlike) lets you do everything CC BY allows, but if you modify the work, you must release your modified version under the same CC BY-SA license. This is how Wikipedia content works — you can edit and republish, but your edits stay open to others. It creates a chain of openness.

CC BY-NC (Attribution-NonCommercial) lets you copy, modify, and share for free, but you cannot sell the work or use it to make money. You must credit the creator. This is common for personal blogs and educational videos.

CC BY-NC-SA (Attribution-NonCommercial-ShareAlike) combines the restrictions: no commercial use, you must credit the creator, and any modified version must use the same license. This is the most restrictive while still allowing modification.

CC BY-ND (Attribution-NoDerivatives) lets you copy and share the work as-is, but you cannot modify it. You must credit the creator. You can use it commercially. This protects the creator's original form while allowing distribution.

CC BY-NC-ND (Attribution-NonCommercial-NoDerivatives) is the most restrictive Creative Commons license. You can only share the work unchanged and for free. You must credit the creator. It is closer to "ask first" than true open licensing.

How to find and read the license on a work

Creative Commons licenses are usually displayed as a logo or text near the work itself. On a photo site, you might see a small CC icon with letters next to it — CC BY-SA, for example. On a blog or document, there is often a license notice at the bottom or in the metadata. On Wikipedia, every article has a license statement in the footer.

The license statement tells you the exact version (Creative Commons has updated its licenses over time) and sometimes links to the full legal text. You do not need to read the full legal text for basic use. The human-readable summary — usually a page or two — tells you what you can and cannot do. If the summary is unclear, the full legal text is the authority.

If a work does not display a Creative Commons license, assume it is under full copyright. The creator owns all rights. You need permission to use it. Do not assume a work is open just because it is on the internet.

What "attribution" means and how to do it correctly

Five of the six Creative Commons licenses require attribution — you must credit the creator. This is not optional. It is a legal condition of your right to use the work.

Attribution usually means including the creator's name, the title of the work, and a link to the original (if online). The exact format varies by license and by creator preference. Some want it in the image itself. Some want it in a caption. Some want it in a bibliography. The license statement usually specifies what the creator wants.

If the license does not specify format, the standard is: Creator Name, "Work Title," License Type, URL to original. For example: "Jane Smith, 'Sunset Over the Bay,' CC BY 4.0, https://example.com/sunset". If you are using the work in a context where a URL does not fit (a printed book, for instance), the creator's name and the license type are the minimum.

Failing to attribute is a license violation. The creator can ask you to remove the work or can pursue copyright infringement. Attribution is not hard — it is just a requirement you have to remember.

The difference between Creative Commons and public domain

Public domain works have no copyright at all. Anyone can use them however they want, with no restrictions and no attribution required. Public domain includes old books, government documents, and works the creator explicitly released into the public domain.

Creative Commons licenses are different. They are still copyrighted. The creator still owns the work. They are just giving you permission to use it under specific conditions. If you violate those conditions, you lose permission and the copyright applies again.

A Creative Commons license is more restrictive than public domain but more open than full copyright. It is a middle ground that lets creators share their work while keeping some control over how it is used.

What happens if you use a Creative Commons work without following the license

If you use a Creative Commons work in a way the license does not allow — for example, you sell a work licensed CC BY-NC, or you modify a CC BY-ND work without permission — you are violating copyright law. The creator can ask you to stop, demand you remove the work, or file a copyright infringement claim.

In practice, most creators of openly licensed work are not aggressively enforcing violations. But some do, especially if you are using their work commercially. The legal risk is real. More importantly, violating the license defeats the purpose of Creative Commons — it breaks the trust that lets creators share openly.

If you are unsure whether your intended use fits the license, contact the creator and ask. Most are happy to grant permission or clarify what the license allows. If you cannot find the creator, err on the side of caution.

Where to find Creative Commons licensed work

Creative Commons maintains a search portal (search.creativecommons.org) that indexes millions of openly licensed images, music, video, and text across multiple platforms. You can filter by license type and by whether commercial use is allowed.

Specific platforms also host Creative Commons work: Unsplash and Pexels for photos (mostly CC0, which is public domain equivalent), Wikimedia Commons for images and media, Free Music Archive for music, and Project Gutenberg for books. Wikipedia itself is CC BY-SA, so any image or text you find there is available under those terms.

When you read or use work from these sites, the license information is usually included or linked. Read it before you use the work. Different works on the same platform may have different licenses.

Frequently Asked Questions

Can I use a Creative Commons image on my business website?

It depends on the license. CC BY, CC BY-SA, and CC BY-ND allow commercial use — your business website counts as commercial. CC BY-NC, CC BY-NC-SA, and CC BY-NC-ND do not. Check the license on the image. If it says "NonCommercial," you cannot use it on a business site without permission from the creator.

If I modify a Creative Commons work, do I have to share my changes?

Only if the license includes ShareAlike (SA). CC BY-SA and CC BY-NC-SA require you to release your modified version under the same license. CC BY, CC BY-NC, and CC BY-ND do not. CC BY-ND and CC BY-NC-ND do not allow modification at all. Check the license abbreviation.

What if I cannot find the creator to ask for attribution?

Do your best to find them. If the work is on a platform like Wikimedia or Unsplash, the creator information is usually there. If you genuinely cannot find them, include whatever information you do have — the platform you found it on, the date, any username or handle. Document your effort. Most creators understand that attribution is sometimes imperfect.

Can I use a Creative Commons work in my own Creative Commons licensed project?

Yes, but you have to respect the original license. If you use a CC BY-SA image in your CC BY-SA project, that is fine — both require ShareAlike. If you use a CC BY-ND image (no modifications), you cannot modify it, so you cannot include it in a derivative work. Mix and match carefully, or stick to the most permissive licenses (CC BY) to avoid conflicts.

Is Creative Commons the same as open source?

No. Open source refers specifically to software code released under licenses like MIT or GPL. Creative Commons licenses explore to creative works — images, writing, music, video. They serve the same purpose (sharing with conditions) but are separate systems with different license types.