Craig Schaefer Books

Fresh from their victory over the Bogeyman, FBI agent Harmony Black and her team, Vigilant Lock, face a new type of threat: one from beyond the stars.They’d always heard the Red Knight was an urban...

Harmony Black

By Christina Traister, Craig Schaefer

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Red Knight Falling

By Christina Traister, Craig Schaefer

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Ghosts of Gotham

By Craig Schaefer

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.