Judith Mann Books

A guide to great inexpensive Asian restaurants in Portland, San Francisco & Seattle

By Judith Mann

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A guide to great inexpensive Asian restaurants in Seattle & Puget Sound

By Judith Mann

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The trail of Gnosis

By Judith Mann

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The trail of Gnosis explores the profound impact of the Inquisition and Albigensian crusades on Catharism and unravels many mysteries linked to sacred gnostic sites of France, Spain, Armenia, Turke...

Paintings on Stone

By Judith Mann

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Spirit Realms of Vietnam

By Judith Mann

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Spirit Realms of Vietnam

By Judith Mann

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Trail of Gnosis

By Judith Mann

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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.