Clay Griffith Books

The Shadow Revolution: Crown & Key

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A thrilling new Victorian-era urban fantasy for fans of Kevin Hearne’s Iron Druid Chronicles, the Showtime series Penny Dreadful, and the Sherlock Holmes movies featuring Robert Downey, Jr. They...

The Undying Legion: Crown & Key

By Clay Griffith, Clay And Susan Griffith

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When monster-hunter Malcolm MacFarlane comes across the gruesome aftermath of a ritual murder in a London church, he enlists the help of magician-scribe Simon Archer and alchemist extraordinaire Ka...

The Undying Legion: Crown & Key

By Susan Griffith, Clay Griffith

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A thrilling new Victorian-era urban fantasy for fans of Kevin Hearne’s Iron Druid Chronicles, the Showtime series Penny Dreadful, and the Sherlock Holmes movies featuring Robert Downey, Jr. With...

The Conquering Dark: Crown & Key

By Clay Griffith

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A thrilling new Victorian-era urban fantasy for fans of Kevin Hearne’s Iron Druid Chronicles, the Showtime series Penny Dreadful, and the Sherlock Holmes movies featuring Robert Downey, Jr. The C...

The Tick

By Ben Edlund, Clay Griffith

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No Applause Necessary Tick No 3

By Clay Griffith

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Stupids The

By Clay Griffith

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I Dare Because I Care Tick No 5

By Clay Griffith

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The Tick

By Ben Edlund, Clay Griffith

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The Stupids

By Clay Griffith

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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.