Pattern library
We create a pattern library — documented solutions to typical interface tasks: how forms, filters, pagination, onboarding, error handling etc. are built, with rules for 'when to apply what'. So the team solves recurring tasks consistently and with proven approaches. Honestly upfront: a pattern library helps consistency and speed but works ONLY when used by the team; patterns are proven solutions for a context, not universal truths (blind transfer harms); and by itself it does not guarantee usability — a pattern must be applied appropriately.
Pattern library — overview

A pattern library is a documented set of solutions to recurring interaction tasks: patterns for forms, navigation, filtering and sorting, pagination/infinite scroll, search, onboarding, empty and error states, confirmations etc. For each — a description, when to apply, pros/cons, examples. Unlike a component library (962, which is about the CODE of specific elements), a pattern library is about SOLUTIONS and approaches (often larger than a single component). Honestly about 'works when used': like any body of knowledge, a pattern library is useful only if the team refers to and applies it. A document that is not used gives no consistency. We make it practical, but application discipline is on your side. Honestly about 'not universal truths', this matters: patterns are proven solutions FOR A CONTEXT, not dogmas. What works for one product type/audience may not suit another. Blindly transferring a 'trendy' pattern without regard for your situation harms. A good pattern library records both WHEN a pattern is appropriate and when it is not — we do exactly that rather than 'here is a list of trendy solutions, apply everywhere'. Honestly about 'no usability guarantee': a pattern must be applied appropriately and well; the mere use of a 'correct' pattern does not guarantee usability — implementation and context matter. Honestly about the link: a pattern library complements the design system (961) and component library (962): components are the 'bricks', patterns are 'how to build typical solutions from them'. Honestly about the effect: it speeds up solving recurring tasks and raises consistency, but it is a knowledge tool, not a guarantee. Honestly about access: the product and an understanding of typical tasks are needed. An important boundary: this is patterns (solutions); components (code) — 962; design system — 961. Picture this: instead of 'everyone solves forms/filters their own way' — unified proven approaches with application rules. The base price starts from 40,000 ₽ (depends on the number of patterns).
Problems we solve
- Typical tasks (forms, filters) are solved differently each time.
- No unified proven approaches to recurring tasks.
- The team reinvents the wheel or copies the 'trendy' blindly.
- Solutions are inconsistent across sections/products.
What's included in the Pattern library service
- Documented patterns of typical tasks (forms, filters, errors etc.)
- Rules of 'when to apply, when not', pros/cons
- Examples and justification for your context
- Honest boundaries (works when used; patterns are not dogmas; no usability guarantee)
- A link with components (962) and the design system (961)
- Accounting for context (against blind transfer)
- A maintenance/extension plan
- Handover and review with you
What you get
- Unified proven approaches to typical tasks
- Faster and more consistent solving of the recurring
- Rules of appropriate application (not dogmas)
- Honest boundaries (a knowledge tool; works when used)
How the work goes: steps
- We define the product's typical tasks; collect approaches
- We document patterns with application rules for the context
- We build in maintenance, honestly set boundaries with you
Why PDV Expert
- Fixed price and timeline — no surprises on the invoice.
- Report and recommendations in plain language — clear without a technical background.
- In touch at every step and answering questions about the result.
FAQ
Are patterns universal correct solutions?
No, honestly: patterns are proven solutions for a CONTEXT, not dogmas. What works for one product/audience may not suit another. Blindly transferring a 'trendy' pattern without regard for your situation harms. A good library records both when a pattern is appropriate and when it is not — we do exactly that rather than 'a list of trendy solutions, apply everywhere'.
How is this different from a component library?
A component library (962) is about the CODE of specific elements (buttons, fields). A pattern library is about SOLUTIONS and approaches to typical tasks (how to build a form, filtering, onboarding), often larger than a single component. Components are the 'bricks', patterns are 'how to build the typical from them'. They complement each other; we will honestly suggest what you need.
Will a pattern library ensure usability by itself?
No, honestly: first, it works only if the team refers to and applies it. Second, a pattern must be applied appropriately and well — the mere use of a 'correct' pattern does not guarantee usability, implementation and context matter. It is a knowledge and consistency tool, not a guarantee of good UX — we honestly state this.
About the provider
The «Pattern library» service is provided by PDV Expert — a team specialising in «Site quality». We work under contract and deliver a written report with recommendations.