To check if an image is copyrighted, start from the assumption that it is, then work backward to confirm ownership or find a license that lets you use it. That means looking for visible notices and watermarks, inspecting the file’s metadata, running a reverse image search to trace the image to its source, and, when you have a name or title, searching the U.S. Copyright Office’s public records. Most images online are protected automatically, with no symbol or registration required, so the burden is on you to establish that a specific image is free to use, not the other way around.
Start With the Default: It’s Probably Protected
Under federal law, copyright exists from the moment an original work is fixed in a tangible form. For images, that’s the instant a photographer presses the shutter or a designer saves a file.1U.S. Copyright Office. What Is Copyright? Registration isn’t required. A copyright symbol isn’t required either. Applying a copyright notice hasn’t been mandatory since March 1, 1989.2U.S. Copyright Office. Circular 1 Copyright Basics The absence of a © tells you nothing.
Protection lasts a long time. For an individual creator, copyright runs for the author’s lifetime plus 70 years. For works made for hire, anonymous works, or pseudonymous works, it’s 95 years from first publication or 120 years from creation, whichever ends first.3Office of the Law Revision Counsel. 17 USC 302 – Duration of Copyright: Works Created on or After January 1, 1978 Unless an image is very old or was deliberately released into the public domain, treat it as copyrighted while you check.
Look at the Image Itself
Some clues are visible. A watermark, whether a semi-transparent logo or a photographer’s name overlaid on the image, is a direct claim of ownership. So is a copyright notice near the image: the © symbol, the word “Copyright,” or “All Rights Reserved” with a year and a name. Context also carries weight. An image on a photographer’s portfolio, a news agency’s site, or a stock marketplace like Getty Images, Shutterstock, or Adobe Stock is almost certainly protected and available only through a paid license.
Check the File’s Metadata
Digital images can carry embedded information called EXIF metadata, which may include the photographer’s name, the creation date, camera settings, and explicit copyright fields. On Windows, right-click the file, select “Properties,” and open the “Details” tab. On macOS, open the image in Preview, go to “Tools,” and select “Show Inspector.” Free web tools like EXIF.tools let you upload an image or paste a URL to read the metadata without downloading anything.
One limit: many social media platforms and content management systems strip EXIF data when images are uploaded. Blank metadata doesn’t mean the image is unprotected. It just means this particular check produced nothing.
Run a Reverse Image Search
Reverse image search is the most useful step for an image with no obvious source. Instead of typing keywords, you give the search engine the image, and it finds visual matches across the web. That often leads back to the original creator, a stock listing, or a licensing page.
Google handles this through Google Lens. On desktop, go to images.google.com and click the camera icon; you can drag and drop, upload a file, or paste a URL. On mobile Chrome, long-press an image and pick “Search image with Google Lens.” TinEye is a dedicated reverse image search that shows where an image has appeared and sometimes when it was first indexed. Bing Visual Search offers a similar tool through the camera icon on the Bing Images page.
Reading the results matters as much as running the search. If the image turns up on a stock site, it’s licensed content. If it traces to a specific photographer’s site or social account, that person almost certainly owns it. If it appears in many places with no clear origin, that doesn’t make it free. It usually means finding the owner will take more work.
Search the Copyright Office Records
The U.S. Copyright Office maintains a searchable public records system at publicrecords.copyright.gov, covering registrations from 1978 to the present, along with some records back to 1898. You can search by title, creator name, keyword, or registration number, and filter by “Visual Materials” to focus on images.4U.S. Copyright Office. Copyright Public Records Portal
This is most useful when you already have a photographer’s name or an image title. It’s less helpful for an anonymous image pulled from a random page. And because registration isn’t required for copyright to exist, an image that doesn’t appear in the registry can still be fully protected. What a match does tell you is who registered the work and when, which matters if a dispute ever arises.
When an Image Is Actually Free to Use
Some images genuinely are free, but you need to know why before you rely on it. There are a few distinct categories.
Public Domain
An image is in the public domain when its copyright has expired, when it was never eligible in the first place, or when the creator formally waived all rights. Works created by U.S. government employees as part of their official duties are not eligible for copyright and enter the public domain from the start.5Office of the Law Revision Counsel. 17 USC 105 – Subject Matter of Copyright: United States Government Works Photos from agencies like NASA and USGS generally fall here, though images made by contractors for the government may not.
Creative Commons Licenses
Creative Commons licenses let creators grant specific permissions while keeping their copyright. The terms depend on which license the creator chose:6Creative Commons. About CC Licenses
- CC BY allows any use, including commercial, with credit to the creator.
- CC BY-NC allows use with credit, but only for noncommercial purposes.
- CC BY-ND allows sharing with credit, but no modifications or derivative works.
- CC BY-SA allows use and modification, but any new work must carry the same license.
These conditions can combine. CC BY-NC-ND, for example, means noncommercial use only, no modifications, attribution required. Always read the specific license attached to the image before you use it.
CC0 and Similar Dedications
CC0 is different from the other Creative Commons licenses. A creator who applies CC0 waives all copyright interest worldwide, effectively placing the work in the public domain. You can copy, modify, and distribute CC0 images for any purpose, commercial included, without asking or crediting.7Creative Commons. CC0 1.0 Universal Sites like Unsplash and Pixabay host large collections under CC0 or similarly permissive terms. Check the license on the individual image rather than assuming the whole site uses one policy.
h2>AI-Generated Images Are a Separate Question
The U.S. Copyright Office has stated that copyright protects only material produced by human creativity. When an AI system generates an image autonomously in response to a text prompt, the output isn’t the product of human authorship and isn’t eligible for copyright registration.8U.S. Copyright Office. Copyright Registration Guidance: Works Containing Material Generated by Artificial Intelligence Purely AI-generated images generally sit outside copyright protection.
Be careful with that inference, though. An image that looks AI-generated may include real human creative input through editing, compositing, or substantial art direction, and the Copyright Office evaluates mixed works case by case. When you can’t tell, treat the image as protected.
Fair Use Is a Defense, Not a Permission
Fair use allows limited use of copyrighted material without permission for purposes like criticism, commentary, news reporting, teaching, and research. It is not a checkbox. Courts weigh four factors together: the purpose and character of your use (commercial use cuts against you, transformative use in your favor), the nature of the original work, the amount used, and the effect on the market for the original.9Office of the Law Revision Counsel. 17 USC 107 – Limitations on Exclusive Rights: Fair Use10U.S. Copyright Office. Fair Use Index There’s no percentage rule and no safe harbor in giving credit. Posting a full copyrighted photograph on your blog with an attribution line is not fair use.
What It Can Cost If You Get It Wrong
Using a copyrighted image without permission carries real financial exposure when the owner has registered the work. Federal law lets the owner choose statutory damages instead of proving actual losses. For a standard claim, a court can award between $750 and $30,000 per work. Willful infringement raises the ceiling to $150,000 per work. Even an innocent infringer who had no reason to know can be ordered to pay at least $200 per work.11Office of the Law Revision Counsel. 17 USC 504 – Remedies for Infringement: Damages and Profits
On top of damages, a prevailing party can be awarded attorney’s fees, which in copyright cases routinely reach tens of thousands of dollars.12Office of the Law Revision Counsel. 17 USC 505 – Remedies for Infringement: Costs and Attorney Fees Statutory damages and attorney’s fees are only available if the copyright was registered before the infringement began or within three months of the work’s first publication.13Office of the Law Revision Counsel. 17 USC 412 – Registration as Prerequisite to Certain Remedies for Infringement There’s also the Copyright Claims Board, a tribunal within the Copyright Office that has handled smaller disputes since 2022 and can award up to $30,000 per proceeding, with a smaller-claims track capped at $5,000.14U.S. Copyright Office. CCB Handbook – Damages That has made it economical for photographers to pursue claims over a single image.
If You Still Aren’t Sure
When your checks are inconclusive and you want to use the image anyway, contact the copyright holder directly. Describe how you plan to use it, whether the use is commercial, and where it will appear. Get the permission in writing, even a plain email, so you have a record. Many photographers and stock agencies have licensing pages that handle this in a few clicks.
The cleanest way to avoid the question is to source images from places where the licensing terms are spelled out: public domain collections, CC0 repositories, and royalty-free stock sites. Read the specific license on each image you take. “Free to download” and “free to use for any purpose” are not the same thing, and the difference is where copyright trouble tends to start.