In-depth articles on ISBNs, publishing, and the international book number system — written for authors, publishers, and curious readers.
Managing ISBNs across a series, multiple editions, and format variants requires careful planning. We cover the rules for when a new ISBN is required and best practices for series numbering.
Amazon uses its own ASIN system alongside ISBNs. Understanding the difference between ISBNs and ASINs matters for authors, publishers, and anyone managing book metadata on Amazon.
ISBNs identify books; ISSNs identify serials like journals and magazines. But the line between books and serials is not always obvious. We clarify when each identifier applies and how they interact.
ISBN errors can derail distribution, delay publication, and fragment sales data. We cover the most common ISBN mistakes publishers make and how to avoid every one of them.
Academic publishing has its own ISBN conventions and metadata requirements. We cover what scholars, university presses, and academic society publishers need to know about ISBNs for scholarly monographs and journals.
Libraries use ISBNs to catalog acquisitions, manage interlibrary loans, and link holdings to shared union catalogs. We explain how library systems use ISBNs and what publishers can do to ensure their books are discoverable.
ISBNs are the invisible infrastructure that makes book distribution possible. From warehouse systems to retailer databases, every link in the supply chain depends on the ISBN to route books correctly.
The barcode on every book cover encodes the ISBN-13 using the EAN-13 standard. We explain how the barcode system works, what the price add-on means, and how to generate a correct barcode for your book.
Every ISBN contains a publisher prefix that identifies who issued the book. We explain how publisher prefixes are assigned, what their length tells you, and how to use publisher prefix pages to research any imprint.
Audiobooks are a distinct product that require their own ISBNs. We cover when audiobook ISBNs are required, how ACX and other platforms handle them, and best practices for multi-format publishing.
In the United Kingdom, Nielsen Book is the official ISBN agency. This guide covers how to register for ISBNs through Nielsen, what the UK registration process involves, and how it differs from Bowker in the US.
Bowker is the sole official ISBN agency in the United States. This guide explains how to purchase ISBNs through myidentifiers.com, register your metadata, and set up your publisher account correctly.