Jay Leibold Books

Return of the Ninja

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Use your ninja skills to break an ancient curse in this interactive book where YOU decide what happens next! Packed with 21 possible endings! Choose Your Own Adventure books–the 4th bestsell...

The Lost Ninja

By Jay Leibold

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Put your ninja skills to the test in this interactive book where YOU decide what happens next! Packed with 14 possible endings! Choose Your Own Adventure books–the 4th bestselling children&r...

El secreto de los ninja Secret of the Ninja

By Jay Leibold

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¡CUIDADO! Este libro es diferente a los demásLo que ocurra en esta historia está SOLO en tus manos. Tendrás que sortear grandes peligros y una mala decisión podr&i...

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.