Christopher Cantwell Books

Hellcat is back! Patsy is living in San Francisco - in a house haunted by the ghost of her mother. But when someone close to her best frenemy Hedy is murdered, Hellcat is the prime suspect! Patsy m...

THANOS: RETURN OF THE MAD TITAN

By Christopher Cantwell

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Thanos vs. the Illuminati with the fate of the planet at stake! As the Mad Titan descends to retrieve a cherished something he has lost, the Illuminati must band together once again to stop him - b...

Iron Man Vol. 1 TPB

By Christopher Cantwell, Cafu Cafu

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Iron Man Vol. 2

By Christopher Cantwell, CAFU, Juann Cabal

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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.