A comprehensive guide to GTIN, UPC, and EAN for authors and publishers. Learn how these product identification numbers relate to ISBN and the global retail system.
ISBN Prefix 979 explained: Why the switch from 978 happened, why you can't convert 979 to ISBN-10, and why this is good news for authors.
A deep dive into Bookland (978), the fictitious country created for books. Learn about ISBN-13, ISSNs, Musicland, and how barcode pricing extensions work.
A complete guide to the EAN system for authors. Learn how ISBN-13 relates to EAN, the difference from UPC, and how GS1 administers global retail codes.
isbn.cloud showing 504 Gateway Timeout? Discover the best free alternatives for ISBN search and publisher data, including Global Register & ISBNLookup.
Learn about the struggle of obtaining BookScan data. We break down the Circana vs. Nielsen monopoly, the high costs for indie authors, and affordable alternatives for tracking book sales.
Exposing the International Barcodes Network: a suspicious network of 100+ identical UPC reseller websites. Learn how to stay safe and generate ISBN barcodes for free.
Complete guide to ISBN service providers and resellers for self-publishers. Compare top ISBN services, pricing, and tips for indie authors.
Fix missing or incorrect ISBN book metadata in Google Books and databases. Step-by-step guide using Open Library for accurate book information.
Step-by-step guide to generating professional ISBN barcodes for self-published books using free tools like ISBNbarcode.org and Canva.
