Karl James Mountford Books

Anyone with a Hogwarts-shaped hole in their lives can't miss the second book in this fantasy series. Dive into a secret underground city where nothing is as it seems..."Part Tim Burton, part J.K. R...

Deadly Omens

By Karl James Mountford, Jennifer Bell

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Deadly Hearts

By Michael Burgan, Karl James Mountford

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A visually dynamic companion to the biographical collection Dark Hearts, this collection of biographies details the cruel and often horrifying lives of history's most notorious - and deadly - peopl...

Dark Hearts

By Karl James Mountford, Jim Gigliotti, Danielle Vega

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Sometimes the truth can be much scarier than fiction. And this collection is no exception. Uncover what fascinated and frightened some of our favorite horror writers of all time.Who are the people...

Nightfall in New York

By Karl James Mountford, Katherine Woodfine

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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.