Pernille Orum Books

WONDER WOMAN™ and the DC Super Hero Girls™ take to the stars for an epic cosmic adventure with awesome collector cards in this deluxe Step into Reading!   Boys and girls ages 4 to...

Showdown in Space

By Courtney Carbone, Pernille Orum

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Butterfly Battle! (DC Super Hero Girls)

By Courtney Carbone Illustrated By Pernille Orum Nielsen

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Hit Girl Volume 4

By Francesco Francavilla, Pernille Orum, Kevin Smith

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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.