Geoff Johns Books

The Flash: Rebirth

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The epic story of Barry Allen’s return from the dead to reclaim his title as The Fastest Man Alive is collected in hardcover.Geoff Johns and Ethan Van Sciver, the writer/artist team behind th...

Teen titans

By Felicia D. Henderson

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Flash omnibus by Geoff Johns vol. 1

By Geoff Johns

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Brightest Day Vol. Two

By Geoff Johns, Peter J. Tomasi

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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.