John Reppion Books

Albion

By John Reppion, Leah Moore

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Cthulhu Lives An Eldritch Tribute to H. P. Lovecraft

By Greg Stolze, John Reppion, Tim Dedopulos

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Darklore Volume IV

By John Reppion, Oana Ghiocel, John Higgs, The Emperor, Nigel Watson, Michael Tymn, Blair MacKenzie Blake, Greg McQueen, Nick Redfern, Robert Schoch, Filip Coppens, Robert Bauval, Greg Taylor, Theo Paijmans, Richard Freeman, Neil Arnold

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Darklore is an anthology of exceptional observations, hidden history and esoteric science. Bringing together some of the top researchers and writers on topics from outside of mainstream science and...

Conspiracy of Ravens

By Written By Leah Moore, John Reppion. Art, Cover By Sally Jane Thompson.

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Teen schoolgirl Anne unexpectedly inherits a mysterious locket and a crumbing English mansion estate from her long-lost aunt. She unearths the family secret that she's part of a magical legacy that...

Sherlock Holmes

By Leah Moore, John Reppion

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Gene Simmons House of horrors

By Simmons Gene

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Gene Simmons House of Horrors TPB

By John Reppion, Leah Moore, Jon Alderink, Dwight L. MacPherson, Zornow, Tom Waltz, Grant Bond, Todd McFarlane, Chris Ryall, Esteve Polls

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Complete Dracula

By Leah Moore, John Reppion

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Sherlock Holmes

By Leah Moore, John Reppion, Matt Triano

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800 Years of Haunted Liverpool

By John Reppion

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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.