Hilary McKay Books

Saffy's Angel

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Saffron's two sisters, Cadmium and Rose, and her brother Indigo were all named from a color chart by their mother Eve, a fine-arts painter. When Saffron, known as Saffy, discovers that her name is...

Indigo's Star

By Hilary McKay

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It's back to school for the start of a new term. Indigo's returning after a bout of glandular fever and is dreading it. Rose is worrying about Indigo--and her new glasses. Saffy is busy dictatin...

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.