Dan Goodfellow Books

Celtic Goddesses, Witches, And Queens Oracle

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A powerful divinatory tool focusing on the wisdom of 40 amazing Celtic goddesses and other powerful women in Celtic myth. Drawing upon the deep well of wisdom from Celtic goddesses and other...

Frame This Oracle

By Juno Lucina, Dan Goodfellow

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Little People of the British Isles

By Dan Goodfellow, Paul Johnson

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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.