Laws of UX
Laws of UX
A short, easy-to-read introduction to UX.
A collection of psychological principles applied in user experience design, explained briefly.
Overview
Laws of UX is a collection of good-practice principles that designers can consider when building interfaces. Each law gets its own page, with a short explanation of user psychology and behavior.
The homepage lists 30 principles, from familiar laws like Hick's Law, Fitts's Law, Jakob's Law and Miller's Law to psychological effects like the Peak-End Rule, the Von Restorff Effect and the Zeigarnik Effect.
For business owners and marketers, it is an easy-to-read reference for understanding why a sales page makes customers buy or leave, so you can give your design team better-grounded feedback.
Highlights
30 UX principles
A collection of laws and psychological effects commonly seen in interface design.
Easy to look up
Each principle has its own page, quick to read in a few minutes.
Tied to user psychology
Explains phenomena such as choice overload, cognitive load and working memory.
Useful for non-designers too
Marketers and business owners use it as a shared language when talking with designers.
What it's for
Reviewing a sales page
Use Hick's Law and Choice Overload to see if the page offers so many choices that customers hesitate.
Designing a signup form
Apply Cognitive Load and Chunking to split a long form into short steps.
Making the call-to-action stand out
Use the Von Restorff Effect so the buy button clearly differs from the rest.
Designing the post-purchase experience
Use the Peak-End Rule to polish the final moments, such as the thank-you page.
Internal training
Use as an introductory UX reference for marketing and sales staff.
How to use it
- 1
Open the homepage
Visit lawsofux.com to see the full list of principles.
- 2
Pick relevant principles
Choose the laws that fit the problem you face, for example a long form or a page with too many choices.
- 3
Compare with your product
Open your website or app and note where it violates the principles.
- 4
Propose changes
Send the design team a list of points to fix, naming the principle as the basis.
Video guides
The Laws of UX - 19 Psychological Design Principles
Joseph Todaro
Laws of UX: Using Psychology to Build Better Products with Jon Yablonski
UX Salon
The 4 Most Important Laws of UX Design
Jesse Showalter
Real-world example
An online furniture store in Ho Chi Minh City sees many visitors on product pages but few filling out the consultation form. The owner reads Hick's Law and Cognitive Load on Laws of UX and realizes the form asks for too much information at once and the page has too many buttons. She asks the designer to shorten the form, split it into two steps and keep only one main call-to-action button, then tracks customer behavior again.
Tips & notes
Start from a specific problem
Don't read it all in one go; look up the principles related to the bottleneck you are facing.
Use it as a shared language
Name the principle when giving feedback so communication with designers is clearer.
Verify with data
Principles are suggestions; measure real user behavior after making changes.
FAQ
Does Laws of UX cost anything?
The principles are published openly on the website to read online.
Can non-designers read it?
Yes, each principle is presented briefly, suitable for marketers and business owners too.
How many principles are there?
At the time of checking, the homepage listed 30 principles.
Useful links
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