3.4 Jakob's law

Two identical smartphone wireframes side by side, separated by an equals sign, showing the same layout with a header, image block, button, and navigation bar — illustrating that users expect familiar, consistent layouts across apps.

Users transfer expectations from other apps, familiar layouts reduce friction.

The Principle: Users spend most of their time on other websites. They prefer your site to work the same way as all the others they already know.

  • Follow Conventions: Use standard icons (like a magnifying glass for search) and common layouts.
  • Don't Reinvent the Wheel: Prioritize clarity and predictability over unique but confusing innovations.
  • Transferable Experience: Leverage existing mental models so users can focus on their tasks rather than learning how to use your interface.