John Bredar Books

Inside The Vatican

By John B. Bredar, John Bredar

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The President'S Photographer

By John B. Bredar, John Bredar

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This behind-the-scenes look at the lives of our recent Commanders in Chief features the images and recollections of the nine professionals who have served as official White House photographers, inc...

Dr. Cockroach

By John Bredar

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Die Macht Der Bilder

By John Bredar

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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.