Colleen M. Madden Books

12 Days of Halloween

By Jenna Lettice, Colleen M. Madden

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The 12 Days of Kindergarten

By Jenna Lettice, Colleen M. Madden

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Get ready to go back to school by counting the first 12 days of kindergarten with this fun-filled picture book inspired by “The 12 Days of Christmas” — perfect for fans of Natasha Wing’s “The...

Multicultural Fairy Tales

By Colleen M. Madden, Carolina Farias, Valentina Belloni, Polona Kosec, Jessica Sarah Gunderson

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Monkey Walk

By Colleen M. Madden

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CowPiggy

By Colleen M. Madden

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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.