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Dmitry Konovalov
RU
All projects
Commercial2026

FSK Group and 1st DSK websites

Nuxt platform for fsk.ru and dsk1.ru: new-build catalog in 7 regions, interactive master plan, floor plans, 3D layouts, SSR for SEO.

Context and goal

FSK Group sells apartments in new developments across 7 regions through the websites of two brands, fsk.ru and dsk1.ru. Both sites run on one Nuxt platform.

An apartment can be chosen in three ways: by parameters, on the master plan of the residential complex, and on the building layout. Catalog and residential complex pages must be indexed by search engines while remaining interactive, and the heaviest screens hit browser performance limits.

Besides selling apartments, the site provides comprehensive information about the residential complex and the company itself in interactive widgets.

My role

  • Apartment selection tools: interactive SVG master plan of the residential complex, floor plans, and 3D view of layouts.
  • Master plan: drawing polygons and markers, positioning tooltips, calculating centroid for geometries without an anchor point, fixing tooltip flicker, clustering markers on zoom.
  • Rendering catalog and residential complex pages: server-side rendering for SEO, server and CDN caching, client-side rendering of heavy interactive blocks, finding and fixing hydration mismatches.
  • Optimizing the heaviest catalog screens: dynamic loading and lazy hydration of heavy blocks, Set and Map indexes instead of nested loops.
  • Building new pages after the redesign, creating universal components, stories and documentation for them.
  • Complex filter system for properties for sale, mortgage calculator, and interactive furniture editor.
  • Refactoring old components from Options API to Composition API (<script setup>), fixing Yandex Metrica goal sending in filters.

Decisions

ФСК. Фрагмент страницы ЖК до редизайна
Example of completed redesign. Fragment of a residential complex page
ФСК. Подборщик квартир с фильтрами
UI of apartment selector with dynamic filters
ФСК. Инфраструктура ЖК
UI of interactive residential complex infrastructure map with marker clustering

Metrics

Metrics improved
8of 8
Biggest shift
×4.4Scroll depth

  • LCP

    Largest Contentful Paint

    After: 2.1 s, before: 3.0 s, better: −30%, good

    What it is
    How long the largest element above the fold takes to appear: an image, a video or a block of text.
    Why it matters
    It is when a visitor feels the page has loaded. One of the Core Web Vitals that Google uses in search.

    Now: good

  • INP

    Interaction to Next Paint

    After: 181 ms, before: 377 ms, better: −52%, good

    What it is
    The delay between a click, tap or key press and the page visibly responding. Close to the slowest one in a visit.
    Why it matters
    A laggy button feels like a frozen site: people click twice and abandon forms. One of the Core Web Vitals.

    Now: good

  • FCP

    First Contentful Paint

    After: 1.2 s, before: 2.6 s, better: −54%, good

    What it is
    Time until the first text or image shows up on screen.
    Why it matters
    The first sign the site is responding. A blank screen feels like nothing is happening.

    Now: good

  • TTFB

    Time to First Byte

    After: 800 ms, before: 1,200 ms, better: −33%, good

    What it is
    Time from the request to the first byte of the response: network, server and database.
    Why it matters
    Everything else waits for it: a slow server delays both FCP and LCP.

    Now: good

  • Visits

    Visits

    After: 380,000

    What it is
    How many times the site was visited in the period. One person can come several times.
    Why it matters
    The audience volume that leads and revenue are counted from.

    Higher is better

  • Visitors

    Unique visitors

    After: 270,000

    What it is
    How many different people, or rather browsers, came in the period.
    Why it matters
    Shows reach: how many people learned about the site at all.

    Higher is better

  • A11y

    Lighthouse Accessibility

    After: 85, before: 54, better: +31, needs work

    What it is
    A 0–100 score from automated checks: contrast, field labels, heading order.
    Why it matters
    The site works with a screen reader, a keyboard and low vision. 90 and above is the green zone.

    Now: needs work

  • Time

    Time on site

    After: 3:50 min

    What it is
    The average visit duration.
    Why it matters
    The longer people read and watch, the more engaging the content. Not always so for quick tasks like a call.

    Higher is better

  • Depth

    Pages per visit

    After: 3.8 pages, before: 2.1 pages, better: +82%

    What it is
    How many pages are opened per visit on average.
    Why it matters
    Shows whether the site leads people on: to the catalogue, prices and contacts.

    Higher is better

  • Scroll

    Scroll depth

    After: 54.3%, before: 12.4%, better: ×4.4

    What it is
    How far down the page visitors get on average.
    Why it matters
    If nobody scrolls to the price or the form, nobody sees them.

    Higher is better

  • Organic

    Organic search share

    After: 93.3%, before: 62.9%, better: +30.4 pp

    What it is
    The share of visits that came from search, not ads.
    Why it matters
    These visitors come for free and are already looking for what you offer.

    Higher is better

Source: Similarweb, Google Lighthouse, Yandex Metrica; July 2026

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