Harry Bliss Books

Diary of a Spider

By Harry Bliss, Doreen Cronin

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Diary of a Fly

By Harry Bliss, Doreen Cronin

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Sorry (Really Sorry)

By Harry Bliss, Joanna Cotler

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A sweet and thoughtful picture book about how one act of kindness can change the world, written by publishing legend Joanna Cotler and illustrated by New York Times bestseller Harry Bliss—now...

Luke Anda Suelto

By Harry Bliss

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Luke’s free as a bird, on a hilarious solo flight through New York City—now in Spanish!Luke looks on at the pigeons in Central Park, while Dad is lost in "boring Daddy talk," and before...

Luke on the Loose

By Harry Bliss

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Luke looks on at the pigeons in Central Park, while Dad is lost in "boring Daddy talk," and before you know itLUKE IS ON THE LOOSE! He's free as a bird, on a hilarious solo flight through New...

Luke on the Loose

By Harry Bliss

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Luke looks on at the pigeons in Central Park, while Dad is lost in "boring Daddy talk," and before you know itLUKE IS ON THE LOOSE! He's free as a bird, on a hilarious solo flight through New...

Good Rosie!

By Harry Bliss, Kate DiCamillo

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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.