Daniel Warren Johnson Books

Beta Ray Bill is one of Thor's staunchest and most powerful allies, and superstar creator Daniel Warren Johnson sends him hurtling through the cosmos on a thrilling solo adventure!The second-most f...

Space-Mullet Volume 1: One Gamble at a Time

By Daniel Warren Johnson

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Ex space Marine Jonah and his co-pilot Alphius rove the Galaxy, just trying to get by. Drawn into one crazy adventure after another, they forge a crew of misfits into a family that must face the da...

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.