Jakob Nielsen Books

Based on one of the largest studies of eyetracking usability in existence used rigorous methodology and eyetracking technology to analyze 1.5 million instances where users look at Web sites. Their...

Mobile Usability

By Jakob Nielsen, Raluca Budiu

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"How do we design the best websites and apps for today's smart phone and tablet users ? Best-selling author Jakob Nielsen and coauthor Raluca Budiu offer their key insights into developing a mobil...

Designing User Interfaces for International Use Advances in Human Factors Ergonomics

By J. Nielsen

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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.