Connolly John Books

The border between Maine and Canada is porous. Anything can be smuggled across it: drugs, cash, weapons, people. Now a group of disenchanted former soldiers has begun its own smuggling operation, a...

The Whisperers: A Charlie Parker Thriller: 9

By John Connolly

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Book of Lost Things

By John Connolly

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Dark hollow

By John Connolly

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The white road

By John Connolly

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In South Carolina, a young black man faces the death penalty for the rape and murder of Marianne Larousse, daughter of one of the wealthiest men in the state. It's a case that nobody wants to touch...

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.