Martyn Godfrey Books

Marcie Wilder's father, who is also principal of her school, announces there will be a school science fair for all seventh graders; however, Marcie is afraid it will turn into a disaster like his o...

Welcome to the club

By Martyn Godfrey

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Everyone thinks Matt is totally reliable. They expect him to be sensible. Everyone thinks Oona is totally weird. They expect her to be outrageous. When Matt and Oona team up in the Helping Hands Cl...

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.