© 2026 usetools. All rights reserved.

Laws of UX is a free educational resource that compiles key UI design best practices derived from psychological principles. Created by Jon Yablonski, it serves as a practical guide for applying psychology to develop more human-centered and intuitive products and digital interfaces. In the design workflow, Laws of UX fits as a reference material for UX designers and developers seeking to align interfaces with user perception and behavior patterns, particularly during ideation, research, and validation phases.
Laws of UX supports designers in real-world scenarios by providing quick references for decision-making. For instance, during wireframing, teams reference laws like Hick's law to limit menu options and reduce user decision time. In usability testing, principles such as Jakob's law guide consistency with familiar patterns across apps, helping avoid user confusion. Developers apply Fitts's law to optimize touch targets for mobile interfaces, improving accessibility. The resource also aids in team discussions on ethics, such as avoiding manipulative personalization, and incorporates methods like eye-tracking for validation. Overall, it functions as a reference tool throughout the design process, from initial sketches to final reviews.
Laws of UX targets UX designers, UI developers, product teams, and researchers who aim to ground their work in psychological foundations. It suits beginners learning core principles as well as experienced professionals needing a concise reference for justifying design choices based on human behavior. Non-designers, such as product managers or stakeholders, use it to understand heuristics like Postel's law for resilient interfaces or the peak-end rule for memorable experiences. The resource applies to projects involving digital products, apps, and websites where intuitive, human-centered design is essential. Visit Laws of UX
Discover more design resources
Explore our comprehensive design glossary to master essential terminology from A/B Testing to Wireframes.
Browse GlossarySearch through our entire collection of design tools and resources
Prompt Creek is a free community-driven repository featuring thousands of AI prompts. Discover, bookmark, and share quality prompts for ChatGPT, Claude, and other AI tools.
Vatis Tech is the most powerful speech-to-text infrastructure. It can be used to transcribe user interviews and client meetings.
Accelerate website creation without needing to code.
18 tools