Grandpa Chan Books

Looking Back Life Was Beautiful

By Grandma Marina, Sophie Bowman, Grandpa Chan

Average: 0.00, 0 Ratings

Looking Back Life Was Beautiful

By Grandma Marina, Sophie Bowman, Grandpa Chan

Average: 0.00, 0 Ratings

Looking Back Life was Beautiful

By Chan Jae Lee, Grandpa Chan

Average: 0.00, 0 Ratings

Based on the Webby award-winning Instagram account Drawings for My Grandchildren, this beautifully-illustrated book celebrates the special love shared between grandparents and their grandchildren.L...

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.