Gary Gianni Books

Storm of Swords

By Gary Gianni, George R. R. Martin

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Knight of the Seven Kingdoms

By Gary Gianni, George R. R. Martin

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Moby Dick Troll Illustrated Classics

By Herman Melville, Gary Gianni

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The Dark Horse Book of Horror

By Featuring Stories From Mike Richardson Mike Mignola Evan Dorkin, Many Others With Art By Gary Gianni Jill Thompson, A Host Of Others.

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Explore the dark corners of the horror genre with this collection of spooky tales of witchcraft, ghosts, and the risen dead! Originally collected as a hardcover, these stories from the likes o...

Gary Giannis Monstermen and Other Scary Stories

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Art of Gary Gianni for George R. R. Martin s Seven Kingdoms

By Gary Gianni

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Art of Gary Gianni for George R.R. Martin s Seven Kingdoms

By Gary Gianni

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Call of Cthulhu

By H.P. Lovecraft, Marcelo Anciano, Gary Gianni

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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.