Design decisions,
connected.

485 cross-linked entries on why interfaces work and what the evidence actually says.

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Hick's LawLaw · Decision making

Three ways in

Design decisions, connected. Look something up, explore the shelves, or start from the thing in front of you.

01
Search
What are you looking for?
Titles, alternative names, tags and the body of every entry. Near misses resolve, and a description of the problem works as well as the name of the concept.
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02
Browse
Explore UX, UI, patterns, research and more.
Twelve shelves and 485 entries, filterable by type, difficulty and evidence strength. Every entry connects across shelves rather than staying on its own.
Explore everything Glossary
03
Solve
What are you designing, or what is going wrong?
Pick the surface you are working on, or the symptom you recognise, and get the laws, patterns, components, accessibility requirements and checklists that apply to it.
I'm designing…Design problems

Laws, principles and heuristics

UI foundations

Patterns and components

Research methods

Accessibility entries

137

Glossary terms

Start from what you are designing

Pick a surface and get the laws, foundations, patterns, accessibility requirements and checklists that apply to it, in one view.

A FormSignup, application, settings or anything else where people type things in.A DashboardAnalytics, monitoring or any screen whose job is to answer a question at a glance.A Mobile AppNative or mobile web, where reach, input precision and connectivity all change.An Ecommerce ExperienceBrowsing, comparing and buying, where trust and honesty are load-bearing.A CheckoutThe last few screens, where every unnecessary decision costs a sale.A Search ExperienceThe input, the suggestions, the results and everything that happens when there are none.An Onboarding FlowThe path from arrival to the first moment the product is actually worth something.SettingsPreferences, account and configuration, where the defaults matter more than the controls.NavigationHow people find out what exists and where they currently are.A Data TableMany records, many attributes, and comparison down a column as the actual task.AuthenticationSign-in, sign-up, recovery and the security decisions that show up as usability ones.An AI ProductModel-driven features, where explanation, control and correction carry more weight than accuracy.An Enterprise WorkflowTools used all day by trained people, where efficiency beats first-use friendliness.A Pricing PageComparison under uncertainty, where framing decisions are also ethical ones.

Twelve shelves, one library

The structure is deliberately flat. Everything is reachable from search, and every entry links across shelves rather than staying on its own.

UXLaws, principles, heuristics and the psychology underneath them64 entries UI DesignType, color, layout, space, motion and the rest of the craft54 entries PatternsInteraction patterns and the components that implement them73 entries ResearchMethods, sample sizes, analysis and honest interpretation31 entries AccessibilityWCAG in practice, assistive technology and inclusive defaults20 entries Design SystemsTokens, components, governance and adoption11 entries ToolsWhat to use, what it is good at, what it is not52 entries TemplatesFillable starting points for the documents designers actually write12 entries ChecklistsInteractive review passes with saved progress11 entries GlossaryPlain-language definitions, cross-linked to the library137 entries Case StudiesDecisions, constraints, trade-offs and what happened10 entries AI for DesignPractical workflows, with the prompts and the failure modes10 entries

Run a UX audit, and keep the findings

Eleven categories, guidance on every check, severity ratings and notes. Progress stays in your browser, and the whole audit exports as Markdown.

Start an audit Browse checklists

485

Test your knowledge

Ten, fifteen or twenty questions on one shelf or the whole library. Every answer links back to the entry behind it.

Interactive checklists

Forms, accessibility, mobile, dashboards, ecommerce and more. Every item links to the reasoning behind it.

Fillable templates

Research plans, interview guides, journey maps and specs. Prefilled, editable, copyable and printable.

Every entry says how much to trust it

Design writing routinely presents an aphorism and a replicated experiment as though they carry the same weight. Each entry here is labelled, and where the popular version of a law overstates its source, the entry says so.

Established research: Originates in published research and has been replicated. The effect is real. Its size in your product still needs measuring.
Mixed evidence: Real research exists, but findings conflict, effect sizes are small, or the jump from the lab to interface design is contested.
Expert heuristic: A review criterion developed by practitioners. Useful and widely taught, but evaluated by judgement rather than measurement.
Craft convention: True because the industry converged on it. Breaking it costs familiarity, not correctness.

Design decisions,connected.