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ProUX
ProUX is a mobile-UX knowledge base and an AI chat grounded in it: verified UX, UI and CRO guidelines and principles, every answer cited to the page it stands on. Free reads all 50 guidelines in full; Pro reads the whole library.
For agents: ProUX, a mobile UX knowledge base with 50 free cited UX, UI and CRO guidelines, plus an AI chat grounded in the library; Pro unlocks the full library.
ux guidelinesmobile uxui designcroux laws
- Authority
- 50 reach 0 · trust 10 · quality 25 · freshness 15
- Tier
- listed
- llms.txt
- https://www.proux.design/llms.txt
- llms-full.txt
- https://www.proux.design/llms-full.txt
- Sections
- 5
- Links
- 68
- Size
- 19294 bytes
- Registered
- 2024-10-02
- Country
- India Site-published organization address
- Publisher address country
- India Site-published organization address; location is not independently verified
- Hosting country
- United States Hosting inference
- Country evidence
- IN · Site-published organization address 2026-10-27
- Categories
- Design · AI and machine learning
- For agents
- Documentation: developer or product docs worth reading, nothing to call
- Inferred actions
- Read documentation Search content About these labels
- Audience
- mixed · agents can: read docs, search content · en
- First seen
- 2026-10-27T09:47:10.307Z
- Last checked
- 2026-10-27T09:47:11.998Z
- Badge
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-27T09:47:10.311Z. Cached copy · Source on proux.design
# ProUX
> ProUX is a mobile-UX knowledge base and an AI chat grounded in it: verified UX, UI and CRO guidelines and principles, every answer cited to the page it stands on. Free reads all 50 guidelines in full; Pro reads the whole library.
Canonical host: https://www.proux.design. The app lives at https://ask.proux.design. See https://www.proux.design/llms-full.txt for a summary of each page in its own words.
## Free library: UX Laws, Principles & Guidelines
- [Index](https://www.proux.design/ux): 50 guidelines, free to read, grouped by cluster.
### Principles: Decision & simplicity laws
- [Hick’s Law](https://www.proux.design/ux/hicks-law): Hick's Law says that the more choices you give someone, the longer they'll take to decide. When people face too many options, making a decision becomes harder and slower.
- [Miller’s Law](https://www.proux.design/ux/millers-law): Miller's Law states that the average person can hold about seven (plus or minus two) items in their short-term memory. In simpler terms, most people can comfortably remember 5 to 9 pieces of information at a time.
- [Tesler’s Law](https://www.proux.design/ux/teslers-law): Tesler’s Law states that every system has a certain amount of complexity that cannot be eliminated. The goal is to shift this complexity from the user to the system or vice versa.
- [Occam’s Razor](https://www.proux.design/ux/occams-razor): Occam's Razor is a simple principle: when faced with multiple explanations or solutions, the simplest one is usually the best.
- [Pareto Principle](https://www.proux.design/ux/pareto-principle): The Pareto Principle, also known as the 80/20 Rule, means that 80% of results come from just 20% of your efforts. This concept highlights how a small portion of actions often leads to the majority of outcomes.
- [Parkinson’s Law](https://www.proux.design/ux/parkinsons-law): Parkinson's Law states that work expands to fill the time or space available for its completion. In simple terms, if you have more time or resources than needed, tasks tend to become more complicated than necessary.
- [Doherty Threshold](https://www.proux.design/ux/doherty-threshold): The Doherty Threshold or the "Golden 60 Seconds" refers to the critical first minute of using a product or website. In that short window, users decide whether to continue using it or move on to something else.
### Principles: Interaction laws
- [Fitt’s Law](https://www.proux.design/ux/fitts-law): Fitt's Law explains that the time it takes to click or tap on something depends on two things: how far away it is and how big it is. Simply put, larger and closer buttons or links are quicker and easier to use.
- [Jakob’s Law](https://www.proux.design/ux/jakobs-law): Jakob's Law states that users prefer your app to work like the ones they already know. Since people spend most of their time using familiar apps and websites, they expect new apps to function in similar ways.
- [Postel’s Law](https://www.proux.design/ux/postels-law): Postel's
…Related sites
Similar publisher descriptions and documentation. Similarity does not imply affiliation or equivalent capabilities.
| Domain | Title | Category | Country | Authority | llms.txt | llms-full.txt | Save |
|---|---|---|---|---|---|---|---|
| lawsofux.com | Laws of UX | documentation Design Documentation and reference | DE | 60 | ✓ | ||
| sunzu.com | Sunzu | documentation AI and machine learning Science and research | — | 47 | ✓ | ||
| builtformars.com | Built For Mars | documentation Documentation and reference | US | 51 | ✓ | ||
| organisologie.com | Organisologie | documentation Productivity | CH | 55 | ✓ | ✓ | |
| optimalworkshop.com | Optimal Help Center | documentation Documentation and reference | — | 59 | ✓ | ||
| smart-interface-design-patterns.com | Smart Interface Design Patterns (by Vitaly Friedman) | documentation Design Documentation and reference | CA | 50 | ✓ | ||
| wyllis.com | The Useful Margin | documentation Personal sites and blogs | — | 50 | ✓ | ✓ | |
| wingify.com | wingify.com | documentation | — | 64 | ✓ |
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