EN ISO 9241-151:2008 PDF

Overview

EN ISO 9241-151:2008 (ISO 9241-151:2008) - "Ergonomics of human‑system interaction - Guidance on World Wide Web user interfaces" - provides human‑centred design guidance specifically for Web user interfaces with the aim of increasing web usability. It targets websites and web applications that address broad Internet audiences or closed user groups (e.g., organizational intranets, customer portals). The standard focuses on content and interaction design rather than low‑level technical implementation, browser internals, or aesthetic/artistic design.

Key topics and requirements

The standard emphasizes high‑level principles and practical guidance across four main areas:

• High‑level design decisions and strategy
  • Define user goals, target groups and context of use; adopt user‑centred design processes.
• Content design
  • Structure, clarity and relevance of content; organization for diverse user knowledge and tasks.
• Navigation and search
  • Consistent navigation, clear signposting, effective search functionality and support for wayfinding.
• Content presentation
  • Readability, layout and presentation techniques that support comprehension and efficient task completion.

Important scope notes (what it does not cover):

• User agents (e.g., browsers) and authoring tools are not the direct subject, though guidance may be applicable.
• Detailed technical implementation, mobile‑specific design or in‑depth aesthetic guidance are outside its scope.
• Accessibility is addressed conceptually, but comprehensive accessibility guidance is covered by related standards (see below).

Practical applications

ISO 9241-151 is practical for improving website and web application usability and for aligning design work with international ergonomic principles. Typical uses include:

• Developing or redesigning public websites, e‑commerce sites, intranets and web applications with a focus on usability.
• Creating content strategies, navigation schemes and search solutions that work for diverse user groups.
• Evaluating conformity of web UI designs to human‑centred usability practices during design reviews and usability testing.

Who should use this standard

• UX/UI designers and information architects
• Product managers and content strategists
• Front‑end developers (for design alignment)
• Accessibility specialists and compliance officers
• Usability researchers and QA teams

Related standards and guidance

• ISO 9241 family (notably ISO 9241‑11, ISO 9241‑110, ISO 9241‑171, ISO 9241‑20)
• ISO 13407 (user‑centred design process)
• ISO 14915 (multimedia/hypermedia design)
• W3C Web Accessibility Initiative (WAI) - practical web accessibility techniques

Keywords: ISO 9241-151, EN ISO 9241-151:2008, Web user interfaces, web usability, human‑centred design, navigation and search, content design, content presentation, web standards.