John Schumacher Books

Angel to Watch over Me

By John Schumacher

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Last Summer

By John Schumacher

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Venison & Fish Recipes Bundle

By John Schumacher

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Catch of the Day

By Chef John Schumacher

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Cast a line for this book! Catch of the Day is guaranteed to take the frustration out of cooking fresh fish and turn you into an expert in making breakfast, soups, sandwiches, sauces and main di...

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.