Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
Public domain
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Public domain" is correct and usable in written English. You can use it when referring to works that are free for use by anyone without copyright restrictions. For example, "The book is in the public domain, so anyone can access it for free." Alternative expressions include "free to use" and "not copyrighted."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
freely available
Unrestricted access
openly accessible
available at no cost
publicly available
public domain
available for free
unrestricted access
complimentary
unpaid
easily available
relatively available
openly available
readily available
fully available
fairly available
quite available
entirely available
completely available
widely available
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Public domain does not apply to Rembrandt.
News & Media
Public domain works available free from etext.virginia.edu/ebooks.edu/ebooks
News & Media
Public domain image created by Jason Benjamin.
News & Media
Public Domain.
News & Media
(Public domain title).
News & Media
Public Domain: NASA, 2011.
News & Media
Public Domain, Wikimedia Commons.
News & Media
It's in the public domain.
News & Media
This is public property and public domain.
News & Media
This information is in the public domain.
News & Media
It's all license or public domain.
News & Media
Expert writing Tips
Best practice
When using the term "Public domain", clearly specify what falls under this designation to avoid ambiguity. For example, specify if it refers to images, text, or other media.
Common error
Avoid assuming all content found online is in the "Public domain". Always verify the copyright status before using any material.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "Public domain" functions primarily as a noun, identifying the status of intellectual property (like books, music, or images) that are not protected by copyright or patent laws. As Ludwig AI confirms, it's a well-understood term.
Frequent in
News & Media
34%
Science
33%
Formal & Business
33%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "Public domain" refers to works or information free from copyright restrictions, allowing unrestricted use by anyone. As indicated by Ludwig AI, it is grammatically correct and widely used, primarily in neutral contexts like news and media, science, and formal communication. When writing about copyright or intellectual property, understanding the meaning of "Public domain" is essential. When using this term, writers should avoid the common mistake of overgeneralizing the "Public domain" status by being explicit about what falls under this designation. Alternatives like "freely available" or "copyright-free" can be used depending on the specific context.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Copyright-free
Specifically indicates the absence of copyright protection.
Without copyright protection
Explicitly states the lack of legal protection.
Not subject to copyright
Similar to copyright-free, but more formal.
Freely available
Emphasizes the lack of cost or restrictions on obtaining something.
Openly accessible
Highlights the ease and transparency of access.
Unrestricted access
Focuses on the absence of limitations or barriers to entry.
Accessible to everyone
Highlights the inclusivity of access.
In the commons
Implies a community ownership or shared resource.
In the public sphere
Indicates that something is part of public knowledge or discourse.
Free for all
Suggests widespread and unregulated use.
FAQs
What does it mean when something is in the "Public domain"?
When a work is in the "Public domain", it means it's free for anyone to use without permission from a copyright holder. This typically happens when the copyright has expired, or the work was never protected by copyright.
How can I tell if something is in the "Public domain"?
Determining if something is in the "Public domain" can be complex, but generally, works published before 1929 in the United States are now in the "Public domain". You can also check copyright notices or search for licensing information.
What are some examples of works in the "Public domain"?
Many classic books, such as "Pride and Prejudice" and older films are in the "Public domain". Also, works created by the U.S. federal government are typically in the "Public domain".
What is the difference between "Public domain" and "Creative Commons"?
"Public domain" means there are no copyright restrictions at all. "Creative Commons", on the other hand, is a licensing system that allows copyright holders to grant certain permissions for use while retaining some rights.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested