# Heurilens > Heurilens UX pattern library — where UX becomes measurable. ## Docs - [How Analysis Works](https://patterns.heurilens.com/how-analysis-works.md): How Heurilens turns user behavior into measurable UX patterns. - [Introduction](https://patterns.heurilens.com/index.md): Heurilens is a UX analysis platform that evaluates user experience through observable product signals. This space documents recurring UX patterns that can be detected, measured, and tracked on real interfaces. - [Competitor Analysis](https://patterns.heurilens.com/modules/advanced/competitor-analysis.md): A measurable UX pattern where users compare experiences across alternatives and choose based on clarity, confidence, and reduced friction. - [Nielsen Heuristics](https://patterns.heurilens.com/modules/advanced/nielsen-heuristics.md): Heurilens interprets Nielsen’s 10 heuristics as measurable product signals — turning usability principles into detectable UX patterns. - [Persona Alignment](https://patterns.heurilens.com/modules/advanced/persona-alignment.md): A measurable UX pattern where the interface fails to match the user’s real goals, context, or decision mindset. - [SEO UX](https://patterns.heurilens.com/modules/advanced/seo-ux.md): A measurable UX pattern where search visibility exists, but user intent is not satisfied after entry. - [UX Laws](https://patterns.heurilens.com/modules/advanced/ux-laws.md): Classic UX laws interpreted as measurable behavioral patterns that reveal friction, hesitation, and decision breakdowns. - [UX Metrics](https://patterns.heurilens.com/modules/advanced/ux-metrics.md): A structured measurement layer that translates user behavior into observable, comparable, and actionable UX signals. - [Cognitive Load](https://patterns.heurilens.com/modules/core-ux/cognitive-load.md): A measurable UX pattern where users slow down, hesitate, or abandon tasks because the interface demands too much thinking at once. - [Consistency](https://patterns.heurilens.com/modules/core-ux/consistency.md): A measurable UX pattern where users lose confidence and efficiency because interface rules change across pages, states, or components. - [First Impression Breakdown](https://patterns.heurilens.com/modules/core-ux/first-impression.md): A measurable UX pattern where users fail to understand value or next steps within the first seconds. - [Readability](https://patterns.heurilens.com/modules/core-ux/readability.md): A measurable UX pattern where users struggle to process content due to density, structure, or typographic friction. - [Visual Hierarchy](https://patterns.heurilens.com/modules/core-ux/visual-hierarchy.md): A measurable UX pattern where users struggle to identify priority, focus, and next actions due to competing visual signals. - [Information Architecture](https://patterns.heurilens.com/modules/interaction-flow/information-architecture.md): A measurable UX pattern where structure, labeling, and navigation determine how users understand, explore, and progress through a product. - [Information Scent](https://patterns.heurilens.com/modules/interaction-flow/information-scent.md): A measurable UX pattern where users follow — or abandon — paths based on how strongly links, labels, and cues signal what lies ahead. - [Interaction Design](https://patterns.heurilens.com/modules/interaction-flow/interaction-design.md): A measurable UX pattern where feedback, timing, and response clarity determine whether users feel in control or disengaged. - [User Flow](https://patterns.heurilens.com/modules/interaction-flow/user-flow.md): A measurable UX pattern where users lose direction, confidence, or momentum across multi-step journeys — causing hesitation, looping, and drop-offs. - [User Story Match](https://patterns.heurilens.com/modules/interaction-flow/user-story-match.md): A measurable UX pattern where product flows succeed or fail based on how well they align with the user’s underlying goal, context, and expectation. - [Accessibility](https://patterns.heurilens.com/modules/technical/accessibility.md): A measurable UX pattern where accessibility gaps create exclusion, hesitation, and silent drop-offs across different user abilities and contexts. - [Mobile UX](https://patterns.heurilens.com/modules/technical/mobile-ux.md): A measurable UX pattern where context, attention limits, and physical interaction constraints shape user behavior on mobile devices. - [Technical UX](https://patterns.heurilens.com/modules/technical/technical-ux.md): A measurable UX pattern where performance, reliability, and technical consistency directly influence user trust, confidence, and continuation. - [UX Risks](https://patterns.heurilens.com/modules/technical/ux-risks.md): A measurable UX pattern where hidden usability issues accumulate over time, silently reducing trust, efficiency, and conversion. - [Behavioral UX](https://patterns.heurilens.com/modules/trust-conversion/behavioral-ux.md): A UX pattern focused on how interface cues influence user behavior — often without users being consciously aware of it. - [Emotional Design](https://patterns.heurilens.com/modules/trust-conversion/emotional-design.md): A measurable UX pattern where emotional cues influence confidence, comfort, and motivation — shaping user behavior beyond pure usability. - [Forms CRO](https://patterns.heurilens.com/modules/trust-conversion/forms-cro.md): A measurable UX pattern where friction, uncertainty, or perceived effort inside forms directly reduces conversion. - [Trust Signals](https://patterns.heurilens.com/modules/trust-conversion/trust-signals.md): A measurable UX pattern where users hesitate or abandon actions because credibility cues are missing, unclear, or mistimed. - [UX Writing](https://patterns.heurilens.com/modules/trust-conversion/ux-writing.md): A measurable UX pattern where unclear, generic, or mistimed copy causes hesitation, errors, and drop-offs at decision moments. - [Quickstart](https://patterns.heurilens.com/quickstart.md): Start measuring UX on real products in minutes — no setup required. ## OpenAPI Specs - [openapi](https://patterns.heurilens.com/api-reference/openapi.json)