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.

Complete guide to SAN in publishing: what it is, how to get one, costs ($150 in US), who needs it, and better alternatives like QR codes.

Publisher rights explained! Learn who owns your book when self-publishing with Amazon KDP's free ISBN. Protect your rights as a self-publisher!

Complete collection of ISBN and book publishing tools for authors. Free ISBN validator, barcode generator, flipbook maker, and more self-publishing resources to streamline your book publishing process.