Account & Taxes
- Create a KDP Account
- Manage Your KDP Account
- Sign in to Your KDP Account
- CreateSpace Account
- Year End Tax Forms
- What is my tax account status?
- Taking the Tax Interview
- Tax Withholding
- Applying for a US ITIN
- How Taxes Affect List Prices
Format Your Paperback
- Set Trim Size, Bleed, and Margins
- Format Front Matter, Body Matter, and Back Matter
- Save Your Manuscript File
- Paperback and Hardcover Manuscript Templates
- Cover Creator
- Create a Paperback Cover
- Format Images in Your Book
- Paperback Fonts
- Fix Paperback and Hardcover Formatting Issues
- Paperback Submission Guidelines
- Format Your Hardcover
- Format Your eBook
Tools and Resources
- KDP Tools and Resources
- Publishing Service Providers & Resources
- Kindle Create Help Overview
- Kindle Previewer
- Kindle Comic Creator
- Kindle Kids' Book Creator
- Quality Notifications Dashboard
- Guide to Kindle Content Quality
- Enhanced Typesetting
- X-Ray for Authors
- Format Your Paperback
- What is KDP?
Create a Book
- Book Detail Resources
- Upload Book Resources
- Pricing Resources
- Book Status
- Low-Content Books
- Kindle Vella
- Start a Book Series
Orders & Book Copies
Proof and Author Copies
- How do I order a proof or author copy?
- How much do proof or author copies cost?
- What is the cost to ship my proof or author copy?
- When will my proof or author copy arrive?
- I’m getting an error ordering my author copy
- I’m getting an error ordering my proof copy
- My proof or author copy came damaged
- My proof or author copy didn’t arrive on time
- My proof or author copy has printing errors
- Proof and Author Copies
- Amazon Store & Detail Page
Marketing & Distribution
- Ways to Promote Your Book
- KDP Select
- Author Central
- A+ Content
- Advertising for KDP books
- Expanded Distribution
- Merchandising Tips
- Nominate Your eBook for a Promotion (Beta)
- Book Updates
Payments & Reports
- KDP Reports
- Old Sales Reports
- KDP Payments
Legal & Content Guidelines
- Kindle Direct Publishing Terms and Conditions
- Program Policies
Kindle Publishing Guidelines
- Getting Started
- General Best Practices
Guidelines for Specific Types of eBooks
- Creating Reflowable Books
- Creating Fixed-Layout Books with Text Pop-Ups
- Creating Fixed-Layout Books with Image Pop-Ups or Virtual Panels
- Creating Fixed-Layout Books Without Pop-Ups
- Creating Kindle Editions with Audio/Video Content
- Creating Dictionaries
- Milestone 1 - Getting Started
- Milestone 2 - Book Details
- Milestone 3 - Manuscript & Cover
- Milestone 4 - Rights & Pricing
- KDP University
- Kindle Publishing Guidelines
Have feedback? Can't find your answer in our Help pages?Contact Us
What is an ISBN and Imprint Name?
Discover what ISBNs do and how imprint names are associated with those unique numbers.
What is an ISBN?An ISBN is a unique 13-digit number assigned to majority of published book. It typically starts with 978 or 979, and identifies various attributes about a book (e.g. edition, publisher name, page count, etc.).
ISBNs are used by booksellers, libraries, publishers, and retailers (like Amazon) to identify the book, manage their inventory, and list it for sale. Amazon also assigns an ASIN (Amazon Standard Identification Number) to each book, which is similar to an ISBN. When you publish through KDP, you’ll notice both numbers are assigned to your book.
If you are publishing a low-content book, you can choose to either use your own ISBN or publish without an ISBN. If you publish without an ISBN, we’ll automatically assign an ASIN for your book. Learn more about low-content books.
Note: An ISBN is required for publication of paperback and hardcover books. eBooks don’t require an ISBN number to be published on KDP.
What is an Imprint?Imprint names are another way books are identified, beyond using an ISBN. Publishers often release books under a different name than their company name, i.e. an imprint. Example: Penguin Random House is the publishing company name, but they often issue books under the imprint, Penguin Classics.
If you’ve registered your ISBN with an imprint outside of KDP, you’ll need to provide both pieces of information exactly how they’re registered, so we can validate your book. However, if you’re using KDP’s free ISBN, we’ll automatically assign your imprint as “Independently published.”
More ISBN resources
- Can I use an ISBN I already own?
- Does KDP offer free ISBNs?
- How do I troubleshoot errors with my ISBN or imprint?