Francis Portela Books

Arana.

By Fiona Avery, Francis Portela, Roger Cruz

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When Araña suddenly uncovers new information on her family's past, it drives her to begin her own personal investigation into what happened before her mother disappeared.

Captain Universe

By Jay Faerber, Craig Kyle, James Raiz, Paul Siqueira, Francis Portela, Jeff Parker, Christopher Yost, Carlos Magno

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Curse

By Vincente Cifuentes, Geoff Johns, Ray Fawkes, Francis Portela, Daniel Sampere

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Green Lantern Vol. 6

By Ethan Van Sciver, Francis Portela, Billy Tan, Robert Venditti

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Life Equation

By Admira Wijaya, Ethan Van Sciver, Francis Portela, Billy Tan, Robert Venditti

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Hardcore Vol. 2

By Brandon Thomas, Leonardo Paciarotti, Francis Portela

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Hardcore Volume 2

By Brandon Thomas, Nic Klein, Leonardo Paciarotti, Francis Portela

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RoboForce 1

By Jao Canola, Melissa Flores, Diogenese Neves, Francis Portela

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Ivar Timewalker Deluxe Edition Book 1

By Raul Allen, Clayton Henry, Fred Van Lente, Francis Portela, Pere Perez

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Kill List

By Cafu, Robert Gill, Francis Portela, Robert Venditti

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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.