Helen Perelman Books

Stolen Jewels Royal Sweets

By Helen Perelman

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Heart to Heart

By Helen Perelman

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Tiana

By Helen Perelman, Studio IBOIX Staff

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Marshmallow mystery

By Helen Perelman

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When the Fairy Code Book containing all of Sugar Valley's important secrets, history, and recipes goes missing, a frantic Raina, the Gummy Fairy, enlists the Candy Fairies to help her find the book...

Marshmallow mystery

By Helen Perelman

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Heart to Heart, Vol. 6 (High School Musical, Stories from East High): Heart to Heart Bk. 6

By Helen Perelman

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Turn Up the Heat

By Helen Perelman

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A Candy Fairies Sugar-tastic Collection Books 5-8: Magic Hearts The Sugar Ball A Valentine's Surprise Bubble Gum Rescue

By Helen Perelman

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Neues von der East High 6: Disney High School Musical

By Helen Perelman

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Disney Princess: Cinderella, The Great Mouse Mistake Aurora, The Perfect Party Tiana, The Grand Opening - 3 Book Set

By Helen Perelman

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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.