Helen Humphreys Books

When Charles Sainte-Beuve, an ambitious French journalist, meets Victor Hugo, a young writer on the verge of fame, he finds himself helplessly attracted to Hugo's long-suffering wife, Adèle. The tw...

Afterimage

By Helen Humphreys

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The lost garden

By Helen Humphreys

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It's Spring 1941 and London is being destroyed by the Blitz. Gwen Davis, a young horticulturist, leaves her beloved city for the Devon countryside where she encounters two people who will change he...

Coventry

By Helen Humphreys

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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.