Klaus Janson Books

The sword of Azrael unleashed! The urban jungle that is Gotham City is being torn apart by the war between Batman and the Joker—a war in which the difference between hero and villain has...

Batman: Curse of the White Knight The Deluxe Edition

By Sean Murphy

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Ancient curses are awoken and timeless secrets are revealed in this Eisner Award nominated and explosive sequel to the critically acclaimed blockbuster Batman: White Knight from writer/artist Sean...

Battlestar Galactica

By Tom DeFalco, Roger McKenzie

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Batman

By Klaus Janson, Greg Rucka

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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.