Jeff Szpirglas Books

They Did What

By Jeff Szpirglas

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Something s Fishy

By Jeff Szpirglas

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Horror House

By Jeff Szpirglas

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Messy Miranda

By Jeff Szpirglas

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Miranda has one messy desk. It's full of books, pencils, science projects and... other stuff. Too much stuff, says her teacher, Ms. Basil. On a family visit to her Uncle Aldo's one night, Miranda w...

They Did WHAT

By Jeff Szpirglas

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Gross Universe

By Jeff Szpirglas, Michael Cho

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Fear This Book

By Jeff Szpirglas

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Fear This Book

By Jeff Szpirglas

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Gross Universe

By Jeff Szpirglas

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Blood on Black Wax

By Jeff Szpirglas, Aaron Lupton

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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.