James Jacobs Books

Pathfinder Pawns: Iron Gods Adventure Path Pawn Collection

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Key monsters and NPCs from the Iron Gods Adventure Path come alive on your tabletop with this collection of more than 100 creature pawns for use with the Pathfinder Roleplaying Game or any tableto...

Pathfinder Flip-Mat: Kingmaker Adventure Path River Kingdoms Ruins Multi-Pack

By James Jacobs, Jason Engle

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Mysterious ruins lie hidden within far-off reaches in the wilderness, ancient remnants of long-lost civilizations. This Flip-Mat Multi-Pack features four such ruined locations: an overgrown keep in...

Pathfinder Harrow Deck (P2)

By James Jacobs, Firat Solhan

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Divine your destiny with the Pathfinder Harrow Deck, the legendary fortune-telling cards of Pathfinder’s Age of Lost Omens setting! With this 54-card, full-color set of fortune-telling cards, you’l...

Pathfinder Flip-Mat: Kingmaker Adventure Path Noble Manor Multi-Pack

By James Jacobs, Jason Engle

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Be it an aristocrat’s manor or a sovereign's throne hall, all nobles and rulers need places to live and to hold court. This Flip-Mat Multi-Pack features two wings of a sprawling mansion fit for nob...

Pathfinder Flip-Mat: Kingmaker Adventure Path Campsite Multi-Pack

By James Jacobs, Jason Engle

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Whether it’s a semi-permanent encampment, a fortified wilderness hideout, or simply a place to set up tents, every wilderness explorer eventually needs a campsite. This Flip-Mat Multi-Pack features...

Pathfinder Pawns: Wrath of the Righteous Adventure Path Pawn Collection

By James Jacobs

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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.