What is Don't Make Me Think about?

Don't Make Me Think is Steve Krug's short, plainspoken guide to web usability. First published in 2000 and revised in 2006 and 2014, it remains the most widely read introduction to the subject, used in design schools and corporate training programs alike. The title is its thesis: good usability means designing so that users never have to wonder what something is or how it works. The moment they have to stop and think, you have already introduced friction that costs you clarity, trust, and conversions.

Krug's central observation is that most web designers and product teams misunderstand how users actually behave online. We design assuming users will read pages carefully, consider all options, and choose deliberately. In reality, users scan, not read. They satisfice — choosing the first option that seems good enough rather than the optimal one. They muddle through without reading instructions. And they don't read error messages. Understanding these behaviors is not cynicism; it's the starting point for design that works.

The book covers navigation (clear, consistent, location-aware), page hierarchy (the most important things must be obvious), link and button design (anything clickable must look clickable), and homepage design (the hardest real estate on the site). Krug is opinionated but not prescriptive — he repeatedly argues that usability principles need to be tested, not just applied from theory, and the book's later chapters cover how to run low-cost guerrilla usability tests with as few as three users.

The third edition added a section on mobile usability, which applies the same principles to the additional constraints of small screens, touch targets, and variable connectivity. Krug's voice throughout is self-deprecating and direct. The book is unusually short for its impact. Designers who have read it extensively cite not its originality but its clarity: it says things that experienced designers know implicitly in language that makes them useful to teach.